NEXUS R5 + Universal Wire-in Harness Kit – 5M / 16′ Length: 5m (16′)

The Ultimate Foundation for Nexus R5 Power Management

The NEXUS R5 + Universal Wire-in Harness Kit (5m / 16′) is the definitive starting point for wiring a professional-grade motorsport electrical system. This kit provides the critical VCU interface while offering extended wire length for larger chassis or unique component placements. It is designed specifically for the Haltech Nexus R5 VCU, a device that integrates an Engine Control Unit (ECU), Power Distribution Module (PDM), and Wideband Controller into a single, compact unit. This harness simplifies the wiring process by terminating the complex VCU connectors while leaving the engine and chassis ends open for custom routing and termination.

Engineering Deep-Dive: Built for Custom Fabrication

The 5-meter (16-foot) length is a strategic choice for dragsters, off-road trucks, and marine applications where the VCU may be mounted far from the engine. The harness utilizes high-grade TXL automotive wire, known for its thin-wall cross-linked polyethylene insulation which offers superior resistance to heat, abrasion, and chemicals compared to standard PVC wire. This reduces harness bulk and weight without compromising durability. The kit includes the specific SurLok high-current power connectors required for the R5’s PDM functions, ensuring a secure, low-resistance path for the unit’s substantial power distribution capabilities.

Operational Benefits: PDM and ECU in One

By using this harness, you unlock the full potential of the Nexus R5. The integrated PDM functionality means you can wire high-current devices like fuel pumps, fans, and solenoids directly to the VCU, eliminating the need for external fuse boxes and relays. This drastically simplifies the vehicle’s wiring architecture, reduces weight, and improves reliability by removing mechanical failure points. The R5’s advanced data logging and telemetry features are fully supported through the harness’s comprehensive I/O pinout.

Fitment and Application Scope

Suits:

• Vehicle Type: Universal (Drag Cars, Off-Road, Marine, Custom Builds).
• VCU: Haltech Nexus R5.
• Engine Support: 1-12 Cylinders, 2-4 Rotors.

Technical Specifications

Summary & Includes

The HT-195201 is the ultimate control package for custom builds needing extended reach.

Includes:

• 1 x Nexus R5 VCU
• 1 x Universal Engine Wiring Harness (5m)
• 1 x SurLok Connector Set (Red/Black)
• 1 x Wi-Fi Antenna
• 1 x USB-C Cable
• 1 x Firewall Grommet (2.5in)
• 1 x Mounting Hardware Kit