Haltech Nexus T1 Motorsport Wiring Loom

Motorsport-grade ETFE (MIL-W-22759/16) wiring loom engineered specifically for the Haltech Nexus T1 ECU.

This wiring loom is designed for builders who require a reliable, professional-grade electrical foundation for a Haltech Nexus T1–controlled engine. Hand-built using MIL-W-22759/16 motorsport-grade ETFE wire, it is intended for high-performance and motorsport applications where heat, vibration, and electrical noise are part of the operating environment.

Whether you’re completing a ground-up race build, an engine conversion, or a high-end performance vehicle, this loom removes the compromises commonly found in universal or automotive-grade wiring.

Designed Specifically for Haltech Nexus T1

This loom is pinned exclusively for the Haltech Nexus T1 ECU. Every circuit is allocated correctly for the ECU’s inputs, outputs, power supply, and communications — with no universal pinouts, repurposed circuits, or guesswork.

Developed as the successor to the Elite 550, the Nexus T1 brings Haltech’s latest Nexus platform into a compact stand-alone ECU. This loom provides a purpose-built wiring foundation to complement the T1’s engine management, I/O, and communication capabilities.

The result is a clean, predictable wiring system that supports accurate sensor readings, stable communications, and long-term reliability.

Built Using Motorsport-Grade ETFE Wire (MIL-W-22759/16)

MIL-W-22759/16 ETFE wire was originally developed for aerospace and military applications and is ideally suited to harsh motorsport environments.

Key benefits include:

• Excellent resistance to heat, fuels, oils, and automotive chemicals

• Thin, lightweight insulation for compact, low-bulk looms

• High durability under vibration and continual movement

• Reduced risk of insulation degradation over time

This wire is selected for reliability — not cost.

Terminated or Unterminated Options

This Nexus T1 loom is supplied in an unterminated (flying lead) configuration as standard, allowing complete flexibility for engine layout, sensor selection, and routing.

A pin placement sheet showing wire numbers is available to download to assist with installation.

Custom terminations, wire lengths, and additional provisions can be discussed prior to ordering if required.

Suitable Applications

This loom is suitable for:

• Motorsport builds including circuit, drag, hillclimb, and time attack

• Engine swaps and custom conversions

• Professional workshops and fabricators

• Enthusiasts experienced with custom wiring installations

This is not a vehicle-specific plug-and-play harness. It is intended for custom installations where control, reliability, and electrical integrity matter.

What’s Included

• Haltech Nexus T1 ECU connector(s)

• Pre-wired ETFE (MIL-W-22759/16) wiring loom

• Built to order and quality checked prior to dispatch

Sensors, actuators, and the ECU are not included.

Lead Time

Each loom is hand-built to order. Typical lead time is displayed at checkout and may vary during busy periods.

If your build has a deadline, please contact us prior to ordering.

Built to Support Serious Builds

The Haltech Nexus T1 brings the latest Nexus engine management technology into a compact stand-alone ECU. This loom is designed to provide it with the professional-grade wiring foundation it deserves — without shortcuts, compromises, or unnecessary complexity.

Select options above or contact us to discuss custom requirements.

Haltech® is a registered trademark of Haltech Engine Management Systems. This product is not affiliated with or endorsed by Haltech.