{"title":"Ignition Control \u0026 Sensors","description":"\u003cdiv class=\"collection-description\"\u003e\n\u003ch2\u003eIgnition Control Modules, Crank Triggers \u0026amp; Ignition Wiring\u003c\/h2\u003e\n\u003cp\u003eBeyond the basic spark delivery components lies the control and triggering architecture that determines when and how the ignition system fires. Ignition control modules, crank trigger systems, and dedicated ignition wiring harnesses are the engineering behind precise timing delivery in performance applications — particularly relevant when an external ignition control box replaces or supplements factory timing management, or when a crank trigger system provides the timing reference accuracy that cam position sensors and distributor pickups cannot match at high RPM.\u003c\/p\u003e\n\u003cp\u003eWith 96 products from MSD, Holley EFI, and Brothers Trucks, our ignition control range supports traditional SBC and BBC distributorless and distributor-based performance ignition systems alongside modern LS applications requiring precision triggering for high-power configurations.\u003c\/p\u003e\n\u003ch3\u003eIgnition Control Modules\u003c\/h3\u003e\n\u003cp\u003eAn external ignition control box — the traditional performance ignition solution for SBC and BBC applications — processes the trigger signal from the distributor pickup and generates a high-energy spark output with controlled duration and precise timing. These systems provide higher spark energy than the stock ignition system, allowing reliable combustion under the marginal conditions of high compression, boost, and lean mixtures that challenge standard ignition components. Advanced features like multiple-spark discharge at low RPM improve idle quality and part-throttle combustion efficiency on modified engines.\u003c\/p\u003e\n\u003ch3\u003eCrank Trigger Systems — Ultimate Timing Precision\u003c\/h3\u003e\n\u003cp\u003eCrank trigger systems attach a precision trigger wheel directly to the crankshaft harmonic balancer, providing a trigger signal that's directly and accurately related to crankshaft position — the thing that actually matters for ignition timing. Compared to distributor-based triggering, which introduces backlash, wear, and mechanical imprecision into the timing signal, a crank trigger produces timing accuracy at high RPM that distributors simply cannot match. For race engines running high compression or aggressive timing curves, the timing precision a crank trigger delivers translates directly to consistent power output and reduced risk of detonation from timing variations.\u003c\/p\u003e\n\u003ch3\u003eIgnition Wiring and Harnesses\u003c\/h3\u003e\n\u003cp\u003eQuality ignition system wiring — correctly rated for voltage, properly shielded against interference, and with quality terminals at every connection — is the infrastructure on which the entire ignition system depends. A poor connection in the ignition circuit causes voltage drops that reduce spark energy; unshielded wiring in proximity to sensitive electronics causes radio frequency interference that disrupts other vehicle systems. Our ignition harness range covers application-specific pre-terminated harnesses for LS and traditional ignition system installations.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"br10030","title":"Brothers Trucks Ignition Indicator","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eWhen restoring your classic truck, you can't forget about the many small pieces that bring it all together. These trim pieces from BROTHERS Trucks are small but necessary parts to make your truck look the same as when it left the factory.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eCompatible with 1967-1972 Chevrolet C10 - 1967-1972 GMC C15\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eAccurate reproduction that looks like the factory part\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Brothers Trucks","offers":[{"title":"Default Title","offer_id":50544527671590,"sku":"BR10030","price":8.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/jnfw_br10030_01_3245a077-db7a-4a86-9088-5295a99fff5f.jpg?v=1777985200"},{"product_id":"swi0072","title":"Brothers Trucks Ignition Switch - Original Style","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eOriginal factory style ignition switch for the classic trucks. This switch mounts on the dash and is used with the factory style bezel and start ID plate. Does not include the lock cylinder, key, bezel, or start ID plate.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eCompatible with 1967-1972 Chevrolet\/GMC C\/K Series Truck, Blazer\/Jimmy \u0026amp; Suburban\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eReplace worn or damaged ignition switch\u003c\/li\u003e\n      \u003cli\u003eUse with factory style bezel, start ID plate, key cylinder, and keys (these parts are not included)\u003c\/li\u003e\n      \u003cli\u003eThe ignition switch mounts on the dash on these trucks\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Brothers Trucks","offers":[{"title":"Default Title","offer_id":50544698163494,"sku":"SWI0072","price":38.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/jnfw_swi0072_01_c8b433ad-e87e-4a8d-bd48-b9a2e62448b6.jpg?v=1777994281"},{"product_id":"swi4753","title":"Brothers Trucks Ignition Switch - Original Style","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eOriginal factory style ignition switch for the classic trucks. Does not include the lock cylinder, or keys.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eCompatible with 1947-1953 Chevrolet\/GMC Truck\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eReplace worn or damaged ignition switch\u003c\/li\u003e\n      \u003cli\u003eUse with factory style lock cylinder and keys (these parts are not included)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Brothers Trucks","offers":[{"title":"Default Title","offer_id":50544698294566,"sku":"SWI4753","price":67.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/jnfw_swi4753_01_b3b4af70-f0a5-42c1-b138-197f27736799.jpg?v=1777994284"},{"product_id":"swi5559","title":"Brothers Trucks Ignition Switch - Original Style","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis is a high quality, exact reproduction of the original ignition switch for these classic trucks. 1957-1959 Year trucks require an adapter wire to make this switch work (# ADT5759). Does not include lock cylinder or key.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eCompatible with 1955-1959 Chevrolet\/GMC Truck\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eReplace worn or damaged ignition switch\u003c\/li\u003e\n      \u003cli\u003eUse with factory style lock cylinder and keys (these parts are not included)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Brothers Trucks","offers":[{"title":"Default Title","offer_id":50544698327334,"sku":"SWI5559","price":90.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/jnfw_swi5559_01_10695199-c170-4dbb-aec4-51586047d76f.jpg?v=1777994297"},{"product_id":"554-112","title":"Holley EFI Four Channel Coil Driver Module","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThe four channel coil driver module is used to drive a two wire \"dumb\" ignition coil. Such coils are typically used on Ford Modular and late model Chrysler HEMI engines. Holley EFI ECUs require this coil driver module when running two wire \"dumb\" coils. Each module can drive four coils, so two are required for an eight cylinder engine that uses eight coils. | Included is the coil driver module, an input harness with pins that can be connected directly into the HP or Dominator ECU, and an output harness with pigtail ends. The user must connect these to their specific coils.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eUsed to drive a two wire “dumb” ignition coil. Great for retrofitting an engine to C-N-P\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eIncludes mating pigtails\u003c\/li\u003e\n      \u003cli\u003ePotted design allows installation in engine compartment\u003c\/li\u003e\n      \u003cli\u003eDrives two wire “Dumb Coils”\u003c\/li\u003e\n      \u003cli\u003eFour channel\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558876025126,"sku":"554-112","price":194.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/554-112_02_7691bd00-87c2-4fc1-9dc3-223996a147d0.jpg?v=1758463919"},{"product_id":"554-122","title":"Holley EFI Eight Channel Coil Driver Kit","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThe eight channel coil driver module is a \"dumb coil\" driver module that plugs into the main harness, which is needed when running the factory coils. Contains two 4-channel drivers, requires on an eight cylinder engine.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eUsed to drive a two wire “dumb” ignition coil. Typically used on late model Chrysler HEMI and Modular Ford engines. Contains two 4-channel drivers\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eEight channel\u003c\/li\u003e\n      \u003cli\u003eDrives two wire “Dumb Coils”\u003c\/li\u003e\n      \u003cli\u003ePotted design allows installation in engine compartment\u003c\/li\u003e\n      \u003cli\u003eContains two 4-channel drivers\u003c\/li\u003e\n      \u003cli\u003ePlug and Play with 558-314, 558-315 and 558-317 Ford Ignition Harnesses\u003c\/li\u003e\n      \u003cli\u003ePlug and Play with 558-310 and 558-311 HEMI Ignition Harnesses\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558879465766,"sku":"554-122","price":273.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/554-122_01_P04_KIT_6f33de9f-d2c1-4fe6-906c-dd31733e14e6.jpg?v=1758463999"},{"product_id":"554-123","title":"Holley EFI Four Channel Coil Driver Module - Used to drive a two wire “dumb” ignition coil.","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThe four channel coil driver module is a \"dumb coil\" driver module that plugs into the main harness, which is needed when running the factory coils. Contains one 4-channel driver.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eUsed to drive a two wire “dumb” ignition coil\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eFour channel\u003c\/li\u003e\n      \u003cli\u003eUse along OEM coils\u003c\/li\u003e\n      \u003cli\u003ePotted design allows installation in engine compartment\u003c\/li\u003e\n      \u003cli\u003eBlack color\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558879564070,"sku":"554-123","price":165.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/554-123_01_15950ad1-8699-4dc4-9e55-9d0222dab935.jpg?v=1758464005"},{"product_id":"556-113","title":"Holley EFI Crank Trigger System - BBC","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eHolley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed \u0026amp; position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to every 45 degrees for a standard 4-Magnet, MSD \"style\" Crank trigger. It is designed for use on early model BBC Chevy applications using a standard ATI or Fluidamper \"style\" balancer up to 7-1\/4\" in diameter.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eWill not work on balancers which do not have a center-hub extrusion (i.e.: Innovators West, etc.). Not for use with Holley EFI with a 4x LSx or Chyrsler V8 NGC cam sensor\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003e8” diameter, 1\/4” thick, billet steel, 36-1 tooth, crank wheel with Black Zinc Oxide finish for superior corrosion resistance \u0026amp; striking good looks.\u003c\/li\u003e\n      \u003cli\u003eCrank wheel centers off of the balancer’s hub, eliminating the need for a centering ring\u003c\/li\u003e\n      \u003cli\u003eAll billet, 6061-T6 aluminum sensor mounting brackets with “bright-dipped” black anodized finish \u0026amp; Laser etched Holley EFI logo\u003c\/li\u003e\n      \u003cli\u003eCustom 3-wire, ferrous-target, Hall-effect sensor with M12X1mm threads for finer gap adjustment\u003c\/li\u003e\n      \u003cli\u003eAll Grade 8 \u0026amp; Mil. Spec mounting hardware\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558896079142,"sku":"556-113","price":608.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/556-113_01_1d9cedb0-0383-4cea-a79a-57de0e0cf93d.jpg?v=1758464322"},{"product_id":"556-115","title":"Holley EFI Crank Trigger System - SBF","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eHolley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed \u0026amp; position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to every 45 degrees for a standard 4-Magnet, MSD \"style\" Crank trigger. It is designed for use on SBF applications using a standard ATI or Fluidamper \"style\" balancer up to 7-1\/4\" in diameter.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eWill not work on balancers which do not have a center-hub extrusion (i.e.: Innovators West, etc.)\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003e7.25” diameter, 1\/4” thick, billet steel, 36-1 tooth, crank wheel with Black Zinc Oxide finish for superior corrosion resistance \u0026amp; striking good looks.\u003c\/li\u003e\n      \u003cli\u003eCrank wheel centers off of the balancer’s hub, eliminating the need for a centering ring\u003c\/li\u003e\n      \u003cli\u003eAll billet, 6061-T6 aluminum sensor mounting brackets with “bright-dipped” black anodized finish \u0026amp; Laser etched Holley EFI logo\u003c\/li\u003e\n      \u003cli\u003eCustom 3-wire, ferrous-target, Hall-effect sensor with M12X1mm threads for finer gap adjustment\u003c\/li\u003e\n      \u003cli\u003eAll Grade 8 \u0026amp; Mil. Spec mounting hardware\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558899093798,"sku":"556-115","price":639.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/556-115_01_4c73bb3f-b939-498a-b525-a7357d4ecc2c.jpg?v=1758464340"},{"product_id":"556-116","title":"Holley EFI Crank Trigger System - SBC","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eHolley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed \u0026amp; position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to every 45 degrees for a standard 4-Magnet, MSD \"style\" Crank trigger. It is designed for use on early model small block Chevy applications using a standard ATI or Fluidamper \"style\" balancer up to 7-1\/4\" in diameter.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eWill not work on balancers which do not have a center-hub extrusion (i.e.: Innovators West, etc.). Not for use with Holley EFI with a 4x LSx or Chyrsler V8 NGC cam sensor\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003e8” diameter, 1\/4” thick, billet steel, 36-1 tooth, crank wheel with Black Zinc Oxide finish for superior corrosion resistance \u0026amp; striking good looks.\u003c\/li\u003e\n      \u003cli\u003eCrank wheel centers off of the balancer’s hub, eliminating the need for a centering ring\u003c\/li\u003e\n      \u003cli\u003eAll billet, 6061-T6 aluminum sensor mounting brackets with “bright-dipped” black anodized finish \u0026amp; Laser etched Holley EFI logo\u003c\/li\u003e\n      \u003cli\u003eCustom 3-wire, ferrous-target, Hall-effect sensor with M12X1mm threads for finer gap adjustment\u003c\/li\u003e\n      \u003cli\u003eAll Grade 8 \u0026amp; Mil. Spec mounting hardware\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558899159334,"sku":"556-116","price":701.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/556-116_01_ecabf9a3-8347-4404-8c38-f5f52219dd06.jpg?v=1758464349"},{"product_id":"556-170","title":"Holley EFI 8-Inch 12-1X Crank Trigger Kit, BBC, Hall Effect","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUpgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system \/ ignition controller). At the heart of the kit is the 3-wire Hall-Effect Sensor that is easier to set up, less susceptible to EMI\/RFI interference\/noise, and less likely to have false signals than other methods (Distributors and VR Magnetic Sensors). In addition, they are less prone to mechanical failure since there are no wear parts. With the included high quality timing pointer and the use of a direct bolt-on, degreed balancer (see below list for recommendations), you'll be able to adjust timing in the precise increments required for your engine. | •\tCoyote 556-173 | We recommend using ATI 918047-MSD but will also work with 918047N and 918047NA | •\tLS 8 inch 556-174 | Designed to work directly with ATI 917302, 918852, 917264 or 917242 | •\tLS 7.28 inch 556-175 | Designed to work directly with ATI 917777, 917211 or 917234 | •\tLS 6.56 inch 556-176 | Designed to work directly with ATI 917776 or 917215\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Big Block Chevrolet\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eMost accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x\u003c\/li\u003e\n      \u003cli\u003ePowerful magnets embedded in a 3\/8-inch thick billet 6061-T6 aluminum trigger wheel\u003c\/li\u003e\n      \u003cli\u003e3-wire Hall-Effect Sensor that is not easily susceptible to EMI\/RFI Interference\u003c\/li\u003e\n      \u003cli\u003eEngine specific kits include a direct bolt-on billet aluminum pick up bracket\u003c\/li\u003e\n      \u003cli\u003eRigid mounting that will not flex and cause timing fluctuation\u003c\/li\u003e\n      \u003cli\u003eEasy to install much like traditional MSD Crank Trigger Kits\u003c\/li\u003e\n      \u003cli\u003eIncluded installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558901846310,"sku":"556-170","price":570.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_2cdaef2d6322049b872663ad47542be2edb59c84_c851a948-3b78-4044-ac5c-bb402ee47b7c.jpg?v=1778245805"},{"product_id":"556-172","title":"Holley EFI 6.56-Inch 12-1X Crank Trigger Kit, SBF, Hall Effect","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUpgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system \/ ignition controller). At the heart of the kit is the 3-wire Hall-Effect Sensor that is easier to set up, less susceptible to EMI\/RFI interference\/noise, and less likely to have false signals than other methods (Distributors and VR Magnetic Sensors). In addition, they are less prone to mechanical failure since there are no wear parts. With the included high quality timing pointer and the use of a direct bolt-on, degreed balancer (see below list for recommendations), you'll be able to adjust timing in the precise increments required for your engine. | •\tCoyote 556-173 | We recommend using ATI 918047-MSD but will also work with 918047N and 918047NA | •\tLS 8 inch 556-174 | Designed to work directly with ATI 917302, 918852, 917264 or 917242 | •\tLS 7.28 inch 556-175 | Designed to work directly with ATI 917777, 917211 or 917234 | •\tLS 6.56 inch 556-176 | Designed to work directly with ATI 917776 or 917215\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Small Block Ford\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eMost accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x\u003c\/li\u003e\n      \u003cli\u003ePowerful magnets embedded in a 3\/8-inch thick billet 6061-T6 aluminum trigger wheel\u003c\/li\u003e\n      \u003cli\u003e3-wire Hall-Effect Sensor that is not easily susceptible to EMI\/RFI Interference\u003c\/li\u003e\n      \u003cli\u003eEngine specific kits include a direct bolt-on billet aluminum pick up bracket\u003c\/li\u003e\n      \u003cli\u003eRigid mounting that will not flex and cause timing fluctuation\u003c\/li\u003e\n      \u003cli\u003eEasy to install much like traditional MSD Crank Trigger Kits\u003c\/li\u003e\n      \u003cli\u003eIncluded installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558902599974,"sku":"556-172","price":570.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_1b317e9fb5313436c86a9894a22424b3165ef1df_bc4a8efd-822d-4b8e-86a0-d026a2b2793e.jpg?v=1778245623"},{"product_id":"556-173","title":"Holley EFI 7-Inch 12-1X Crank Trigger Kit, Coyote, Hall Effect","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUpgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system \/ ignition controller). At the heart of the kit is the 3-wire Hall-Effect Sensor that is easier to set up, less susceptible to EMI\/RFI interference\/noise, and less likely to have false signals than other methods (Distributors and VR Magnetic Sensors). In addition, they are less prone to mechanical failure since there are no wear parts. With the included high quality timing pointer and the use of a direct bolt-on, degreed balancer (see below list for recommendations), you'll be able to adjust timing in the precise increments required for your engine. | •\tCoyote 556-173 | We recommend using ATI 918047-MSD but will also work with 918047N and 918047NA\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Coyote, Requires Custom Ignition Type in Holley EFI Software\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eMost accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x\u003c\/li\u003e\n      \u003cli\u003ePowerful magnets embedded in a 3\/8-inch thick billet 6061-T6 aluminum trigger wheel\u003c\/li\u003e\n      \u003cli\u003e3-wire Hall-Effect Sensor that is not easily susceptible to EMI\/RFI Interference\u003c\/li\u003e\n      \u003cli\u003eEngine specific kits include a direct bolt-on billet aluminum pick up bracket\u003c\/li\u003e\n      \u003cli\u003eRigid mounting that will not flex and cause timing fluctuation\u003c\/li\u003e\n      \u003cli\u003eEasy to install much like traditional MSD Crank Trigger Kits\u003c\/li\u003e\n      \u003cli\u003eIncluded installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup\u003c\/li\u003e\n      \u003cli\u003eRequires Custom Ignition Type - Will not work the the Coyote Ignition Dropdown in Holley EFI Software.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558903320870,"sku":"556-173","price":674.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_25660b2b069310d46ee7e09b02cf2ce2988b3718_e3da5bee-4303-4178-80a9-45f50fc37ca1.jpg?v=1778245702"},{"product_id":"556-174","title":"Holley EFI 8-Inch 12-1X Crank Trigger Kit, LS, Hall Effect","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUpgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system \/ ignition controller). At the heart of the kit is the 3-wire Hall-Effect Sensor that is easier to set up, less susceptible to EMI\/RFI interference\/noise, and less likely to have false signals than other methods (Distributors and VR Magnetic Sensors). In addition, they are less prone to mechanical failure since there are no wear parts. With the included high quality timing pointer and the use of a direct bolt-on, degreed balancer (see below list for recommendations), you'll be able to adjust timing in the precise increments required for your engine. | •\tCoyote 556-173 | We recommend using ATI 918047-MSD but will also work with 918047N and 918047NA | •\tLS 8 inch 556-174 | Designed to work directly with ATI 917302, 918852, 917264 or 917242 | •\tLS 7.28 inch 556-175 | Designed to work directly with ATI 917777, 917211 or 917234 | •\tLS 6.56 inch 556-176 | Designed to work directly with ATI 917776 or 917215\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Gen III and IV LS\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eMost accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x\u003c\/li\u003e\n      \u003cli\u003ePowerful magnets embedded in a 3\/8-inch thick billet 6061-T6 aluminum trigger wheel\u003c\/li\u003e\n      \u003cli\u003e3-wire Hall-Effect Sensor that is not easily susceptible to EMI\/RFI Interference\u003c\/li\u003e\n      \u003cli\u003eEngine specific kits include a direct bolt-on billet aluminum pick up bracket\u003c\/li\u003e\n      \u003cli\u003eRigid mounting that will not flex and cause timing fluctuation\u003c\/li\u003e\n      \u003cli\u003eEasy to install much like traditional MSD Crank Trigger Kits\u003c\/li\u003e\n      \u003cli\u003eIncluded installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558903681318,"sku":"556-174","price":570.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_21636a5aff470634ff100788d9fc6249ce9168c1_73581899-e9cf-4425-97f3-4933e7498daa.jpg?v=1778245698"},{"product_id":"556-175","title":"Holley EFI 7.25-Inch 12-1X Crank Trigger Kit, LS, Hall Effect","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUpgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system \/ ignition controller). At the heart of the kit is the 3-wire Hall-Effect Sensor that is easier to set up, less susceptible to EMI\/RFI interference\/noise, and less likely to have false signals than other methods (Distributors and VR Magnetic Sensors). In addition, they are less prone to mechanical failure since there are no wear parts. With the included high quality timing pointer and the use of a direct bolt-on, degreed balancer (see below list for recommendations), you'll be able to adjust timing in the precise increments required for your engine. | •\tCoyote 556-173 | We recommend using ATI 918047-MSD but will also work with 918047N and 918047NA | •\tLS 8 inch 556-174 | Designed to work directly with ATI 917302, 918852, 917264 or 917242 | •\tLS 7.28 inch 556-175 | Designed to work directly with ATI 917777, 917211 or 917234 | •\tLS 6.56 inch 556-176 | Designed to work directly with ATI 917776 or 917215\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Gen III and IV LS\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eMost accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x\u003c\/li\u003e\n      \u003cli\u003ePowerful magnets embedded in a 3\/8-inch thick billet 6061-T6 aluminum trigger wheel\u003c\/li\u003e\n      \u003cli\u003e3-wire Hall-Effect Sensor that is not easily susceptible to EMI\/RFI Interference\u003c\/li\u003e\n      \u003cli\u003eEngine specific kits include a direct bolt-on billet aluminum pick up bracket\u003c\/li\u003e\n      \u003cli\u003eRigid mounting that will not flex and cause timing fluctuation\u003c\/li\u003e\n      \u003cli\u003eEasy to install much like traditional MSD Crank Trigger Kits\u003c\/li\u003e\n      \u003cli\u003eIncluded installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558904238374,"sku":"556-175","price":570.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_03d611f79061d9d281deee99a5113f4c3a173002_559054c4-a439-4a93-84f9-14b7e61a637b.jpg?v=1778245126"},{"product_id":"556-176","title":"Holley EFI 6.56-Inch 12-1X Crank Trigger Kit, LS, Hall Effect","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUpgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system \/ ignition controller). At the heart of the kit is the 3-wire Hall-Effect Sensor that is easier to set up, less susceptible to EMI\/RFI interference\/noise, and less likely to have false signals than other methods (Distributors and VR Magnetic Sensors). In addition, they are less prone to mechanical failure since there are no wear parts. With the included high quality timing pointer and the use of a direct bolt-on, degreed balancer (see below list for recommendations), you'll be able to adjust timing in the precise increments required for your engine. | •\tCoyote 556-173 | We recommend using ATI 918047-MSD but will also work with 918047N and 918047NA | •\tLS 8 inch 556-174 | Designed to work directly with ATI 917302, 918852, 917264 or 917242 | •\tLS 7.28 inch 556-175 | Designed to work directly with ATI 917777, 917211 or 917234 | •\tLS 6.56 inch 556-176 | Designed to work directly with ATI 917776 or 917215\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Gen III and IV LS\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eMost accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x\u003c\/li\u003e\n      \u003cli\u003ePowerful magnets embedded in a 3\/8-inch thick billet 6061-T6 aluminum trigger wheel\u003c\/li\u003e\n      \u003cli\u003e3-wire Hall-Effect Sensor that is not easily susceptible to EMI\/RFI Interference\u003c\/li\u003e\n      \u003cli\u003eEngine specific kits include a direct bolt-on billet aluminum pick up bracket\u003c\/li\u003e\n      \u003cli\u003eRigid mounting that will not flex and cause timing fluctuation\u003c\/li\u003e\n      \u003cli\u003eEasy to install much like traditional MSD Crank Trigger Kits\u003c\/li\u003e\n      \u003cli\u003eIncluded installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558904762662,"sku":"556-176","price":584.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_03d611f79061d9d281deee99a5113f4c3a173002_7c3af8e9-d7c8-4418-b091-b1d9d94a501a.jpg?v=1778245132"},{"product_id":"558-113","title":"Ford Modular 2V and 4V Main Harness for use with Holley Smart Coils","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eMain Harness for 99-04 2 \u0026amp; 4 Valve Ford Modular (4.6 \u0026amp; 5.4L) Engines for use with Holley Smart Coils\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eMain Harness for 1999-2004 2 \u0026amp; 4 Valve Ford Modular (4.6 \u0026amp; 5.4L) Engines for use with Holley Smart Coils\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558910923046,"sku":"558-113","price":842.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-113_a939d2d9-6d3f-4f72-832a-6eeb3eb85ea1.jpg?v=1758464669"},{"product_id":"558-117","title":"Holley EFI Universal MPFI Coil On Plug Main Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor Grounds.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eUNIVERSAL MPFI W\/ COP MAIN HARNESS\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eBuilt in C-O-P Harness\u003c\/li\u003e\n      \u003cli\u003eAdditional 40 amp relay to power individual coils\u003c\/li\u003e\n      \u003cli\u003e20awq gauge wire or larger!\u003c\/li\u003e\n      \u003cli\u003ePlug and play with 558-312 or 558-318 Smart Coil Sub Harnesses.\u003c\/li\u003e\n      \u003cli\u003eDual CANbus Connectors for multiple CAN devices\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558911185190,"sku":"558-117","price":548.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-117_01_P04_KIT_98922203-e224-4846-946a-22cce63ee2fc.jpg?v=1758464684"},{"product_id":"558-118","title":"Holley EFI Ford MPFI Coil On Plug Main Harness - Plug in Play","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor Grounds. The Ford MPFI C-O-P Main Harness has also been pre-terminated for the stock Pulse Width Modulated Idle Air Control motors commonly found on Fuel Injected Windsor 5.0L engines.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003ePlug in Play\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eBuilt in C-O-P Harness\u003c\/li\u003e\n      \u003cli\u003eAdditional 40 amp relay to power individual coils\u003c\/li\u003e\n      \u003cli\u003ePre-Terminated for Ford PWM IAC\u003c\/li\u003e\n      \u003cli\u003e20awq gauge wire or larger!\u003c\/li\u003e\n      \u003cli\u003ePlug and play with 558-312 or 558-318 Smart Coil Sub Harnesses\u003c\/li\u003e\n      \u003cli\u003eDual CANbus Connectors for multiple CAN devices\u003c\/li\u003e\n      \u003cli\u003eMultiple sensor lengths have been extended to accommodate various intake designs\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558911611174,"sku":"558-118","price":594.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-118_a441932b-b280-4542-8763-58eb768659bb.jpg?v=1758464687"},{"product_id":"558-127","title":"Holley EFI Benchtop Harness - Firmware Updating - Dash Configuration - ECU Testing","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eDesigned for benchtop testing and setup of HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7\" dashes. | Great for ECU diagnostics, firmware updating, or pre-configuring dash layouts without being in the vehicle. | Harness has pre-terminated connectors for the following sensor inputs: CAN, Crank, Cam, TPS, Input #1, P1A, Main Power, and Sniper EFI connectors for a Sniper main harness. | Also includes a power switch for quick setup in your workspace. Power and Ground flying leads need to be connected to your battery or power supply. (Not included)\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFirmware Updating - Dash Configuration - ECU Testing\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eTerminated connectors for several EFI inputs\u003c\/li\u003e\n      \u003cli\u003eIncluded power switch allows for a quick “install” on your test bench\u003c\/li\u003e\n      \u003cli\u003eGreat for ECU diagnostics that do not require a running engine, firmware updates, or 7” dash calibrations\u003c\/li\u003e\n      \u003cli\u003eIncluded power switch\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558914068774,"sku":"558-127","price":238.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-127_01_c0802dee-e827-4d58-b275-b1f488c55480.jpg?v=1758464733"},{"product_id":"558-302","title":"Holley EFI Tach Input Ignition Adapter","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis is only used on applications using a CD Box, such as an MSD 6AL, while not using timing control.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003ePlugs into the connector labeled “IGNITION” on the main harness. The Loose yellow\/black lead connects to the “Tach Out” terminal of the ignition box.\r\nCaution: Never connect this wire directly to the Ignition Coil\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558922490150,"sku":"558-302","price":26.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-302_4c59acba-4457-4f0e-b254-c37ee951bad0.jpg?v=1758464930"},{"product_id":"558-304","title":"Holley EFI HEI GM Small Cap Ignition Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eHEI Adapter Harness\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eHEI Ignition Harness for Avenger EFI, HP EFI \u0026amp; Dominator EFI\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558922948902,"sku":"558-304","price":66.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-304_01_29bfeb34-ea66-417c-bffa-98b1c3c4a09c.jpg?v=1758464939"},{"product_id":"558-305","title":"Holley EFI Ford TFI Ignition Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eFord TFI Ignition Adapter Harness\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFord TFI Ignition Harness for Avenger EFI, HP EFI \u0026amp; Dominator EFI\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558923047206,"sku":"558-305","price":141.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-305_01_118d76d1-920b-4352-9bc1-4d6955b268c9.jpg?v=1758464946"},{"product_id":"558-306","title":"Holley EFI Universal Unterminated Ignition Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUniversal Unterminated Ignition Harness for HP EFI \u0026amp; Dominator EFI\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558923211046,"sku":"558-306","price":160.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-306_01_4bf6fcd4-9e47-4262-a010-e1d697100b7c.jpg?v=1758464953"},{"product_id":"558-307","title":"Holley EFI Universal Coil On\/Near Plug Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUniversal Coil On\/Near Plug Harness – Use to connect Holley PN 558-312 or factory GM LSx coil harnesses to Holley HP or Dominator ECU's\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor use with Holley® HP and Dominator ECUs and other EFI systems\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eFor use with Holley HP or Dominator ECUs\u003c\/li\u003e\n      \u003cli\u003eUniversal\u003c\/li\u003e\n      \u003cli\u003eConnects 558-312 or factory GM LSx coil harnesses\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558923669798,"sku":"558-307","price":199.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-307_01_P04_KIT_a59fe4ca-4b41-427e-b5ed-97206fc6a814.jpg?v=1758464963"},{"product_id":"558-308","title":"Holley EFI Main Power Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3\/8\" ring terminals and shrink tube (not pictured) . The harness is fuse protected and covered in braided split loom for additional abrasion protection .\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558923997478,"sku":"558-308","price":117.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_2f059bd3f6959852caec56a27bf5e9f1a73a23a9_cd1f1fca-4f07-4a1e-bb11-dd74b0ce4367.jpg?v=1778245810"},{"product_id":"558-310","title":"Holley EFI Gen III HEMI Coil Harness - Early Coils","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eChrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very different visually and makes for a simple review. If the coil requires spark plug wires, it is the early coil. If the coil does not require plug wires and simply has two boots that connect to the plugs in the cylinder head, it is the later coil. View the image gallery for images of both types.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eTake control of your Gen III HEMI with Holley EFI by controlling fuel and spark. Great for power upgrades and engine swaps.\u003c\/li\u003e\n      \u003cli\u003eCapable of tuning with power adders such as nitrous, superchargers or turbos and compatible with methanol and water injection\u003c\/li\u003e\n      \u003cli\u003eHarnesses are available to connect to a Gen III HEMI engine for the most advanced fuel and timing controls available\u003c\/li\u003e\n      \u003cli\u003eEach Harness is designed in fit and function specifically for the Gen III HEMI engine platform\u003c\/li\u003e\n      \u003cli\u003eAll wiring is TXL grade copper wiring with minimal weight, high temp sleeve in a small diameter\u003c\/li\u003e\n      \u003cli\u003eFactory style terminations provide a strong, secure connection\u003c\/li\u003e\n      \u003cli\u003eConnectors are OEM grade for a correct, positive fit\u003c\/li\u003e\n      \u003cli\u003eEach harness is routed through a split-loom braid for protection and great looks\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558924063014,"sku":"558-310","price":184.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-310_05629e51-7534-4615-be8d-674885964354.jpg?v=1758464974"},{"product_id":"558-311","title":"Holley EFI Gen III HEMI Coil Harness - Late Coils","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eChrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very different visually and makes for a simple review. If the coil requires spark plug wires, it is the early coil. If the coil does not require plug wires and simply has two boots that connect to the plugs in the cylinder head, it is the later coil. View the image gallery for images of both types.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eTake control of your Gen III HEMI with Holley EFI by controlling fuel and spark. Great for power upgrades and engine swaps.\u003c\/li\u003e\n      \u003cli\u003eCapable of tuning with power adders such as nitrous, superchargers or turbos and compatible with methanol and water injection\u003c\/li\u003e\n      \u003cli\u003eHarnesses are available to connect to a Gen III HEMI engine for the most advanced fuel and timing controls available\u003c\/li\u003e\n      \u003cli\u003eEach Harness is designed in fit and function specifically for the Gen III HEMI engine platform\u003c\/li\u003e\n      \u003cli\u003eAll wiring is TXL grade copper wiring with minimal weight, high temp sleeve in a small diameter\u003c\/li\u003e\n      \u003cli\u003eFactory style terminations provide a strong, secure connection\u003c\/li\u003e\n      \u003cli\u003eConnectors are OEM grade for a correct, positive fit\u003c\/li\u003e\n      \u003cli\u003eEach harness is routed through a split-loom braid for protection and great looks\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558924128550,"sku":"558-311","price":189.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-311_c8bbb8f3-600d-44dc-ae8c-2c4e4e42cf18.jpg?v=1758464978"},{"product_id":"558-312","title":"Holley EFI HP Smart Coil Ignition Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eHP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart Coils. They plug into Holley LSx plug and play main harnesses if one wants to replace factory LSx coils with Holley HP Smart Coils. If using a non-LSx main harness, purchase PN 558-307 for connectors, wiring, terminals to connect directly to a Holley HP or Dominator ECU\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor use with Holley® HP and Dominator ECUs and other EFI systems\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eIncludes a pair of coil harnesses for an 8 cylinder engine\u003c\/li\u003e\n      \u003cli\u003eSimilar to factory GM LSx coil harnesses\u003c\/li\u003e\n      \u003cli\u003eFor use with Holley HP or Dominator ECUs\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558924226854,"sku":"558-312","price":248.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/large558-312_37c535ca-235f-426f-a0b5-aee8d232a673.jpg?v=1758464980"},{"product_id":"558-314","title":"Holley EFI Ford 2V Modular Coil Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eCoil harness for 99-04 2 Valve Ford Modular (4.6 \u0026amp; 5.4L) Engines.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003e99-04 2 Valve Ford Modular Coil Harness, For HP EFI \u0026amp; Dominator EFI\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558924980518,"sku":"558-314","price":215.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-314_01_2f6adca3-43e9-4c47-a6bc-c67c32ebf117.jpg?v=1758464988"},{"product_id":"558-315","title":"Holley EFI Ford 4V Modular Coil Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eCoil harness for 99-04 4 Valve Ford Modular (4.6 and 5.4L) engines.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003e99-04 4 Valve Ford Modular Coil Harness, For HP EFI and Dominator EFI\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558925013286,"sku":"558-315","price":199.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-315_92325778-286e-411c-a691-7941cdc921de.png?v=1758466567"},{"product_id":"558-317","title":"Holley EFI Ford Coyote Coil Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eCoil Harness for 2011 to 2015 Ford Coyote (5.0L) Engines\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003e2011 to 2015 Ford Coyote Coil Harness, For HP EFI \u0026amp; Dominator EFI\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558925078822,"sku":"558-317","price":208.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-317_d6aca951-4354-4b8f-a797-40baa025974e.jpg?v=1758464991"},{"product_id":"558-318","title":"Holley EFI C-N-P Ignition Sub Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003e\"Big Wire\" Sub Harness- pre wired with 12ga power and grounds, for optimal performance!\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003e“Big Wire” C-N-P Ignition Sub Harness\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003e“Big Wire” Sub Harness- Pre wired with 12ga Power and Grounds, for optimal performance!\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558925111590,"sku":"558-318","price":252.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-318_ecf73b5f-5e22-4578-8d4e-ea44e0dc19c8.jpg?v=1758464993"},{"product_id":"558-323","title":"Holley EFI HyperSpark Ignition Adapter","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eDesigned to plug and play with HyperSpark distributors and Holley EFI main harnesses with ignition connector.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor use with Terminator X\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eUsed to run a \"timed sequential\" fuel strategy\u003c\/li\u003e\n      \u003cli\u003eFor Terminator X when used with HyperSpark\u003c\/li\u003e\n      \u003cli\u003e(2) connectors\u003c\/li\u003e\n      \u003cli\u003eWires are in protective sleeve\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003ch4 class=\"mt-3 mb-1\"\u003eTECHNICAL SPECS\u003c\/h4\u003e\n  \u003cdl class=\"billy-specs\"\u003e\n    \u003cdt\u003eLength\u003c\/dt\u003e\n\u003cdd\u003e17\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558926061862,"sku":"558-323","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-323_0119269_ae2e3a96-efb8-4aa5-907b-a46570f647da.jpg?v=1758465018"},{"product_id":"558-330","title":"Holley EFI Sniper 2 Pro Billet Ignition Adapter","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eProvide RPM signal to the ECU for your Sniper 2 while using timing control. With two wires, it's quick and easy to install in your vehicle. Requires connection to Ignition Coil Driver, such as CD Ignition Box, to control timing.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eAdd RPM signal\u003c\/li\u003e\n      \u003cli\u003eTwo wire installation\u003c\/li\u003e\n      \u003cli\u003eUsed on a Pro-Billet Distributor or Magnetic Crank Trigger to Sniper 2\u003c\/li\u003e\n      \u003cli\u003eBlack connector with purple and green wire\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558927274278,"sku":"558-330","price":34.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/gmvr_1c834fcb8cfe578d8a85f99b2f81ad446b922316_cb830400-9948-4c9d-9bc0-816e604ac43d.jpg?v=1778245615"},{"product_id":"558-400","title":"Holley EFI Connector J1A\/B Input\/Outputs Auxiliary Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis harness connects to the (8) pin Metri-Pack Input\/Output connector located in most Holley EFI main harnesses.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eFor Dominator, HP, Terminator X and Terminator X Max\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003e(8) Metri-Pack pins\u003c\/li\u003e\n      \u003cli\u003e(4) Input Wires\u003c\/li\u003e\n      \u003cli\u003e(4) Output Wires\u003c\/li\u003e\n      \u003cli\u003eAssorted wire colors\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558927405350,"sku":"558-400","price":144.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-400_01_bdf97124-e30a-443b-859a-07ac377f480c.jpg?v=1758465045"},{"product_id":"558-401","title":"Holley EFI Dominator EFI Auxiliary Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eUsed when adding a second wide band oxygen sensor to a Dominator EFI installation.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eDominator EFI Connector J2A Auxiliary Harness\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eJ2A Connector\u003c\/li\u003e\n      \u003cli\u003e#2 Wide band oxygen sensor harness (Fully Terminated)\u003c\/li\u003e\n      \u003cli\u003e23 user programmable input wires with pre-crimped ECU pins\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558927864102,"sku":"558-401","price":231.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-401_642514e0-0366-42b8-934b-a5fcc7ba9211.jpg?v=1758465048"},{"product_id":"558-402","title":"Holley EFI Dominator EFI Auxiliary Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eJ2B Connector | Four Additional Injector Driver Outputs | Four Additional Coil Driver Outputs | 23 User Programmable Outputs\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eDominator EFI Connector J2B Auxiliary Harness\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558928093478,"sku":"558-402","price":190.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-402_01_91271277-b71a-4bca-bc5d-db29ea350c1c.jpg?v=1758465055"},{"product_id":"558-403","title":"Holley EFI Dominator EFI Auxiliary Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eJ3 ECU Connector | 17 User Programmable Inputs and Outputs\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eNote when purchasing this harness, J3 is also used for DBW applications\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558928257318,"sku":"558-403","price":190.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-403_01_21ff111c-89bd-4666-bb93-225de1d75bf9.jpg?v=1758465061"},{"product_id":"558-404","title":"Holley EFI Dominator EFI Auxiliary Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eJ4 ECU Connector | 26 User Programmable Inputs and Outputs\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eNote when purchasing this harness, J4 is also used for Transmission Control\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558928781606,"sku":"558-404","price":229.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-404_01_9bd23956-f8ff-4064-a3d4-93a4eb059d1c.jpg?v=1758465068"},{"product_id":"558-431","title":"Holley EFI Crank\/Cam Ign. Harness. Fully terminated harness.","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis fully terminated harness is compatible with HP and Dominator ECU's and is plug and play w\/ the following products: | 554-118-HALL EFFECT CRANK TRIGGER SENSOR | 554-124-FERROUS TARGET CRANK SENSOR | 554-125-FLYING MAGNET CAMSHAFT SENSOR | 554-127-CAMSHAFT SENSOR W\/ FLYING MAGNET TARGET | 556-114-BBC CAM SYNC KIT W\/BRACKET | 556-119-SBC CAM SYNC KIT W\/BRACKET\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eCrank\/Cam Ign. Harness for Ferrous Crank\/Magnetic Cam Hall Effect Sensors. Fully terminated harness\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558934352166,"sku":"558-431","price":109.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-431_01_d35d7859-b1cd-4ed9-bcef-2b747b8a984c.jpg?v=1758465179"},{"product_id":"558-437","title":"Holley EFI Hemi Drive-By-Wire Throttle Body Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThe Holley Dominator ECU has built in capability to control the Drive-By-Wire throttle pedals and throttle bodies used on most Chrysler HEMI applications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":50558936219942,"sku":"558-437","price":131.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-437_01_3c1ee601-7d80-4bd0-934c-bac31707e197.jpg?v=1758465233"},{"product_id":"556-150","title":"COIL DRIVER MODULE, SNIPER EFI - Sniper EFI Coil Driver Module","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThe Sniper EFI Coil Driver Module is designed to be used in place of a capacitive discharge box. This coil driver is utilized to amplify the energy transferred to your spark plug, promoting complete combustion in the cylinder!\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eNot designed to be used with Sniper EFI Ignition Coil part number 556-152\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eCompact size allows for easy installation without cluttering up your engine bay!\u003c\/li\u003e\n      \u003cli\u003eLabeled wires take the stress out of your wiring installation\u003c\/li\u003e\n      \u003cli\u003eRequires Canister Style Ignition Coil\u003c\/li\u003e\n      \u003cli\u003eBlack\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley Sniper EFI","offers":[{"title":"Default Title","offer_id":50559308661030,"sku":"556-150","price":179.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/556-150_01_7341d365-6352-412e-8afe-34a7679f0c8e.jpg?v=1758557310"},{"product_id":"556-151","title":"Sniper Hyperspark EFI Ignition - Sniper EFI HyperSpark Ignition Box","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eImprove your electrical system with our HyperSpark ignition box, providing better start up, overall driveability, and in some applications, fuel economy. For maximum performance, pair with all of our other HyperSpark components, ensuring spark is evenly distributed throughout the system.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eIgnition Box for HyperSpark\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eDesigned to work with Sniper EFI\u003c\/li\u003e\n      \u003cli\u003e\u0026lt;150uA low key off current for storage vehicles\u003c\/li\u003e\n      \u003cli\u003eMomentarily protection against sudden volt increase during jump start\u003c\/li\u003e\n      \u003cli\u003eSealed and powder coated for maximum protection in the engine bay\u003c\/li\u003e\n      \u003cli\u003eExternal diagnostic LED for verifying system health\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley Sniper EFI","offers":[{"title":"Default Title","offer_id":50559308726566,"sku":"556-151","price":351.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/556-151_0118143_d4ff9da7-7d84-4b14-9310-cc6582a4c17e.jpg?v=1758557320"},{"product_id":"556-154","title":"HYPERSPARK 2 - Sniper EFI HyperSpark 2 Ignition Box","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eWith 50% smaller and 70% lighter, our redesigned ignition box is designed to fit almost anywhere in your engine bay. This box packs all of the proven features of it's predecessor into a smaller form, making it easier to mount and install, with a cleaner installation. Increase up to 150mJ of spark energy when paired with other HyperSpark components, providing more every day performance.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eSolid Core spark plug wires cannot be used with the HyperSpark 2 EFI Ignition Box. It also cannot be used with distributorless ignition systems (DIS)\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eDirect replacement from previous model, can use the same harness and connector with new or existing HyperSpark installs\u003c\/li\u003e\n      \u003cli\u003eGreater spark energy of 135mJ to 150mJ from idle to redline RPM (Based on components used)\u003c\/li\u003e\n      \u003cli\u003ePowerful capacitive discharge of multiple sparks improves throttle response and engine combustion\u003c\/li\u003e\n      \u003cli\u003eUpdated processor and board for improved efficiency reducing heat and current draw\u003c\/li\u003e\n      \u003cli\u003eFiltered circuits preventing magnetic interference\u003c\/li\u003e\n      \u003cli\u003eBuilt in protection against open coil, shorted coil, and open load scenarios\u003c\/li\u003e\n      \u003cli\u003eSmaller size and weight for more mounting options\u003c\/li\u003e\n      \u003cli\u003eOperates on many 7V-28V electrical systems\u003c\/li\u003e\n      \u003cli\u003e12 pin connector\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley Sniper EFI","offers":[{"title":"Default Title","offer_id":50559309381926,"sku":"556-154","price":351.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/2cc36f614333778427bb249978b15a0d9f2dcf6b_46634cff-f9c2-4ced-983c-6b032ffb6816.jpg?v=1758557348"},{"product_id":"556-156","title":"HYPERSPARK IGNITION BOX SERVICE HARNESS - Sniper EFI HyperSpark Ignition Box Service Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis harness includes switched 12V, battery+, battery-, ignition coil wire, and output wires for points or electronic ignition amplifier. Harness is wrapped in protective split wire loom for increased protection and cleaner installation.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eReplacement harness for HyperSpark and HyperSpark 2 Ignition Boxes\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003ePlug and play with existing HyperSpark installations or Sniper EFI HyperSpark Main Harnesses (PN 558-328)\u003c\/li\u003e\n      \u003cli\u003eReplacement\/Service harness\u003c\/li\u003e\n      \u003cli\u003eHarness wrapped in black split wire loom\u003c\/li\u003e\n      \u003cli\u003e(3) Connectors\u003c\/li\u003e\n      \u003cli\u003e(2) Terminals\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley Sniper EFI","offers":[{"title":"Default Title","offer_id":50559309414694,"sku":"556-156","price":41.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/7fbf065498d851620a923108834f1f65a920655f_88a3218f-d672-454b-a3c5-87b35de19c16.png?v=1758559892"},{"product_id":"230-vm-4ana8","title":"V-NET FOUR CHANNEL ANALOG MODULE","description":"This V-Net adapter module allows users to monitor 4 analog inputs from a Racepak transducer box (PN: 810-MB-08P).\u003cul\u003e\u003c\/ul\u003e","brand":"Racepak","offers":[{"title":"Default Title","offer_id":50565436604710,"sku":"230-vm-4ana8","price":211.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/850ef5d35f5ed78153430b87ed3cb5311fc0f44d_261e9348-5d7f-4588-a276-0f4f8c470a76.jpg?v=1757065442"},{"product_id":"558-328","title":"HYPERSPARK PLUG AND PLAY MAIN HARNESS - HyperSpark Plug and Play Main Harness","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eWith our HyperSpark plug and play main harness, you replace the Sniper 1 main harness and use the new harness to connect your HyperSpark components. Designed to be used when connecting HyperSpark distributor, HyperSpark coil, HyperSpark ignition, I\/O connector, and your Sniper throttle body, this harness reduces any wiring confusion and installation time.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eNot for Sniper 2 EFI, only to be used on Sniper 1\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eHarness only requires one connection to battery+, battery-, switch 12V, and fuel pump.\u003c\/li\u003e\n      \u003cli\u003ePre-terminated connectors and built in 40A relay provides power to all of the components within the system\u003c\/li\u003e\n      \u003cli\u003ePlug and play design for simple installation\u003c\/li\u003e\n      \u003cli\u003eCompatible for Sniper 1 only\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley Sniper EFI","offers":[{"title":"Default Title","offer_id":51408160784678,"sku":"558-328","price":279.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/558-328_01_P01_CON_be4ac9ae-cd6e-4b61-82c1-f2f06e0e40fd.png?v=1758557363"},{"product_id":"bddp170072","title":"ACCEL HEI Battery And Tachometer Pigtail Connector - HEI dual pigtail","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eFor GM HEI coil in cap this connector helps clean up your engine bay by eliminating the use of single spade connectors that are prone to falling off and killing your ignition. This connector is a tight positive fit with a locking tab and shark fin on it to ensure that the connection between your wiring and HEI stays intact. The connector houses two wires, one bright red for your 12 volt key switched wire, and the other green for you tachometer to wire up. The high temperature connector has 2 ten inch leads coming out of it.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eHEI dual pigtail connector\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eNice Clean Connection\u003c\/li\u003e\n      \u003cli\u003eEasy Installation\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"ACCEL","offers":[{"title":"Default Title","offer_id":51409182818598,"sku":"170072","price":14.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/bddp_170072_01_81d80e9d-b81c-402f-971a-96b35995eb80.jpg?v=1778508704"},{"product_id":"bddp35362","title":"ACCEL High Performance Ignition Module For GM Remote Mount Coil HEI","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eThis high performance HEI module provides your plugs with more spark over the stock module. The solid state electronics provide high coil out put and superior reliability. The Dwell control circuit ensures, long consistent coil charging. The current control circuit protects against coil over heating. This module fits most GM Remote Mount Coil HEI distributors for V8 engines.\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eReplacement GM Remote Mount Coil HEI. 1986 thru 1992\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eFits Most Stock And Modified Distributors\u003c\/li\u003e\n      \u003cli\u003eSolid State Electronics\u003c\/li\u003e\n      \u003cli\u003eDwell Control Circuit\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"ACCEL","offers":[{"title":"Default Title","offer_id":51409183736102,"sku":"35362","price":68.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/bddp_35362_01_fc90257d-488e-4501-89fe-9a576b9aac5e.jpg?v=1778509166"}],"url":"https:\/\/billysspeedshop.com\/collections\/ignition-control-sensors.oembed","provider":"Billys Speed Shop","version":"1.0","type":"link"}