8 channel High Output Ignition Coil Harness Only GM/Chrysler

Overview

Purpose-built 8-channel high output ignition harness designed specifically for GM and Chrysler coil-on-plug applications running individual IGN-1A inductive coils. This professional-grade harness eliminates the guesswork and potential reliability issues of custom wiring, delivering clean power and signal distribution for high-output engines where ignition timing precision is critical.

Technical Specifications

• Part Number: HT-130306
• Channels: 8 individual coil outputs
• Coil Type: IGN-1A inductive high output
• Application: GM/Chrysler coil-on-plug systems
• Construction: Professional automotive-grade wiring

Why You Need This

High-output engines running forced induction or aggressive naturally aspirated setups demand reliable ignition systems that can deliver consistent spark energy under extreme conditions. This harness is engineered for builders tackling serious GM and Chrysler applications — think LS swaps pushing serious boost, built 6.4L Hemi engines, or race-prepped small blocks where ignition failure isn't an option. The individual coil-per-cylinder design eliminates the weak points common in distributorless ignition conversions, particularly the voltage drop and heat buildup that plague makeshift wiring solutions.

We see too many builds where enthusiasts attempt to splice factory harnesses or use generic wiring, only to encounter misfires under load, coil failures, or intermittent timing issues that are nearly impossible to diagnose. This purpose-built harness uses the correct wire gauge, proper shielding, and GM/Chrysler-specific connectors to ensure each IGN-1A coil receives clean power and precise trigger signals. Essential for any serious engine build where consistent ignition timing directly translates to reliable power delivery and engine longevity.

ECU & System Compatibility

Designed for use with Haltech Elite and Nexus ECU systems controlling individual IGN-1A high output inductive coils. Compatible with Elite 550, 750, 1000, 1500, 2000, and 2500 ECUs, plus the full Nexus R3, R5, and Rebel range. Contact our technical team to confirm optimal configuration for your specific ECU model and engine application.

What's in the Box

• 8-channel high output ignition coil harness with GM/Chrysler connectors
• Individual coil power and signal leads
• Professional-grade automotive wiring throughout

Complete Your Build

Most customers building high-output GM or Chrysler applications pair this harness with individual IGN-1A coils and a suitable Haltech ECU package. Our technical team can recommend the optimal ECU configuration for your specific engine combination, along with complementary fuel system and sensor packages. With Billy's UK stock and expert pre-sales consultation, we'll ensure your ignition system is properly matched to your power goals from the start.