Modular Harness System: Nexus V8 USCAR Secondary Injector Breakout
The Nexus Universal V8 Terminated Harness system utilizes a modular design to accommodate the vast variety of engine configurations found in the V8 world. The GT150 (USCAR) Injector Secondary Breakout is a specific sub-harness designed to connect the main harness trunk to your fuel injectors. This particular breakout is intended for the Secondary set of injectors in a complex setup, or specific bank configurations depending on the loom layout. It features the modern USCAR / GT150 style connectors, which are the industry standard for late-model GM LS2/LS3/LS7, Ford Coyote, and Chrysler Hemi engines. By separating the injector terminations from the main harness, Haltech allows you to swap from EV1 to USCAR injectors, or change your injector layout, simply by unplugging this sub-loom and replacing it, rather than modifying the entire engine harness.
Engineering & Construction
This sub-harness is constructed with motorsport-grade materials, featuring high-temperature wire insulation and a durable braided loom to protect against abrasion and radiant heat. The connectors are genuine GT150 (USCAR) types, ensuring a perfect, weather-tight seal with modern high-impedance injectors. The harness is wired to plug directly into the mating connector on the HT-186200 Nexus Universal V8 Main Harness. This modularity not only simplifies installation but also future-proofs your build; if you upgrade to different injectors later, you only need to change this breakout section.
Operational Benefits
- Modular Flexibility: adapts the universal V8 harness to USCAR-style injectors.
- Plug-and-Play: No cutting or crimping; clicks directly into the main Nexus harness.
- High-Quality Connectors: Uses genuine USCAR plugs for reliable contact and sealing.
- Clean Installation: Sized and loomed to lay flat on the intake manifold for a professional look.
Fitment Guide
Designed for use with the Nexus Universal V8 Terminated Harness (HT-186200).
- Injector Type: GT150 / USCAR (Late model GM/Ford/Chrysler).
- Position: Secondary (Refer to harness diagram for specific assignment, typically for 2nd set of injectors or specific bank).
Technical Specifications
| Parameter | Specification |
|---|---|
| Connector Type | GT150 / USCAR |
| Function | Secondary Injector Breakout |
| System Compatibility | Haltech Nexus V8 Harness (HT-186200) |
Summary & Includes
Includes:
- 1 x Nexus Universal V8 – GT150 (USCAR) Injector Secondary Breakout Loom.












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