Nexus Rebel LS - Multec 2 Injector Sub Harness

Overview

The Nexus Rebel LS Multec 2 Injector Sub Harness delivers the precise connections needed for GM Multec 2 injectors in your LS swap, eliminating wiring headaches and ensuring reliable fuel delivery. Purpose-built for the Nexus Rebel LS ECU system, this 8-injector harness integrates seamlessly with your main terminated harness for professional-grade results.

Technical Specifications

• Part Number: HT-186503
• Injector Capacity: 8 injectors
• Connector Type: Multec 2
• Compatibility: Nexus Rebel LS main terminated harness
• Construction: OEM-spec terminated connectors

Why You Need This

GM's Multec 2 injectors are found across countless LS applications — from truck 4.8L and 5.3L engines to performance 6.0L builds — making this sub-harness essential for most LS swaps. Without the correct connector interface, you're left bodging connections or hunting down individual pigtails, both of which create reliability issues and voltage drops that affect injector performance. The Multec 2's robust design handles higher fuel pressures brilliantly, but only when properly connected.

This harness eliminates the guesswork entirely. Whether you're dropping an L33 into a drift car, building a turbo LS truck motor, or converting a classic to EFI with salvage yard injectors, the correct sub-harness ensures each injector receives clean, consistent signals. Poor connections here mean misfires, lean conditions, and potentially expensive engine damage — particularly crucial when you're pushing boost or high-flow applications where injector response is critical.

ECU & System Compatibility

Specifically designed for the Haltech Nexus Rebel LS ECU system, connecting directly to the injector breakout connector on the main terminated harness. This creates a complete plug-and-play solution for Multec 2 equipped LS engines without modification or additional splicing.

What's in the Box

• Pre-terminated sub-harness with 8 Multec 2 injector connectors
• Main harness breakout connector (compatible with Nexus Rebel LS)
• Professional-grade wiring with OEM-specification terminals

Complete Your Build

Most customers completing an LS swap also require fuel rail adapters, appropriate injector flow rates for their application, and often upgraded fuel pumps to match. Our technical team can recommend the complete fuelling package based on your specific LS variant and power goals. With Billy's Speed Shop holding comprehensive UK stock of Haltech components, we can supply your entire Nexus Rebel LS setup with expert pre-sales advice to ensure compatibility across every connection point in your build.