Charging System Integration: Nexus LS Bosch Alternator Harness
The Nexus LS 2 Pin Bosch Alternator Harness completes the suite of charging adapters for the Haltech Nexus Universal V8 Terminated Harness system. While many LS engines use Delco units, several specific applications (such as the Pontiac GTO, certain Holden models, and some truck accessories) utilize a Bosch 2-pin alternator. This 200mm adapter harness allows these alternators to plug directly into the Nexus V8 harness infrastructure. Like its counterparts, it includes the essential 470-ohm excitation resistor wired inline. This resistor mimics the resistance of a dashboard charge bulb, providing the necessary current to wake up the voltage regulator and initiate charging. Without this specific adapter, users with Bosch alternators would be forced to cut and splice their new harness, risking warranty voiding and connection reliability.
Engineering & Construction
The harness features a molded Bosch-style 2-pin connector that provides a click-lock fitment to the alternator. The 200mm lead length is optimized to bridge the gap from the main harness loom to the alternator position without excess slack. Constructed with automotive-grade TXL wire and protected by heat-shrink tubing, the harness is built to withstand the rigorous conditions of the engine bay. The integrated resistor is securely encapsulated to prevent failure from vibration or moisture.
Operational Benefits
- Plug-and-Play: No cutting or splicing required when using the Nexus V8 Harness.
- Excitation Circuit: Built-in 470R resistor ensures the alternator charges correctly.
- Specific Fitment: Designed for the Bosch 2-pin connector found on select LS applications.
- Reliability: Professional termination ensures long-term charging stability.
Fitment Guide
Designed for LS engines with Bosch 2-pin alternators used with the Nexus V8 Harness.
- Suits: Haltech Nexus R5 Universal V8 Terminated Harness (HT-186200).
- Alternator Type: Bosch 2-Pin.
Technical Specifications
| Parameter | Specification |
|---|---|
| Length | 200mm |
| Connector | Bosch 2-Pin |
| Resistor | 470R (Excitation) |
| Application | Alternator Adapter for Haltech Harness |
Summary & Includes
Includes:
- 1 x Nexus LS 2 Pin Bosch Alternator Harness (200mm).
Note: Only for use with the Haltech HT-186200 Universal V8 Harness.

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