Nexus V8 GT150 (USCAR) Injector Secondary Breakout

Overview

The Nexus V8 GT150 Injector Secondary Breakout transforms your V8 build by providing plug-and-play compatibility between Haltech's Nexus R5 Universal harness and GT150 (USCAR) style injectors. Essential for serious V8 builds running high-flow injectors, this breakout eliminates wiring complexity while ensuring bulletproof connections under the bonnet.

Technical Specifications

• Part Number: HT-186003
• Connector Type: GT150 (USCAR) style injector terminals
• Application: V8 secondary injector circuits
• Compatibility: Nexus R5 Universal V8 Terminated harness (HT-186200)
• Construction: Weatherproof automotive-grade connectors

Why You Need This

High-performance V8 builds—whether you're running a boosted LS swap, twin-turbo Coyote, or naturally aspirated stroker—often require secondary injectors to meet fuel delivery demands. The challenge comes when your chosen GT150-style injectors (like ID1050X, Bosch EV14, or Injector Dynamics units) don't directly match your Nexus harness connections. Without this breakout, you're left cutting and splicing OEM connectors, creating potential failure points in your fuel system.

This breakout solves that problem completely. GT150 connectors are the gold standard in performance applications—used by ID, Bosch, and other premium injector manufacturers for their superior current-carrying capacity and resistance to heat cycling. Whether you're building a 1000hp LS3, converting a classic muscle car to EFI, or assembling a dedicated track weapon, this breakout ensures your secondary injector circuit maintains OEM reliability standards while supporting serious power levels.

ECU & System Compatibility

Specifically designed for the Haltech Nexus R5 Universal V8 Terminated harness (HT-186200), providing seamless integration with the Nexus R5 ECU platform. The Nexus R5's advanced staged injection control works perfectly with this breakout to deliver precise fuel metering across the entire rev range, from idle stability to full-throttle operation.

What's in the Box

• Nexus V8 GT150 Injector Secondary Breakout harness
• Pre-terminated GT150 (USCAR) style injector connectors
• Weatherproof connector seals and terminals

Complete Your Build

Most customers fitting this breakout are running the Nexus R5 Universal V8 Terminated harness (HT-186200) as their foundation. Consider adding appropriate injector drivers if your secondary injectors exceed the ECU's onboard capacity, plus a quality fuel rail and pressure regulator setup to match your injector flow rates. Our technical team keeps comprehensive UK stock of Nexus components and can advise on the complete wiring solution for your specific V8 build—from weekend street cars to full competition engines.