Haltech I/O16 Input / Output Expander Motorsport Wiring Loom

Motorsport-grade ETFE (MIL-W-22759/16) wiring loom engineered specifically for the Haltech I/O16 Input / Output Expander module.

This wiring loom is designed for builders who require a robust, professional-grade electrical foundation for a Haltech I/O16–based engine management or vehicle control system. Hand-built using MIL-W-22759/16 motorsport-grade ETFE wire, it is intended for high-performance and motorsport applications where heat, vibration, electrical noise, and long-term reliability are critical.

The Haltech I/O16 expands ECU capability by providing additional configurable inputs and outputs for sensors, switches, actuators, and auxiliary systems. This loom eliminates the compromises commonly found in universal or automotive-grade wiring and ensures reliable signal integrity in demanding environments.

Designed Specifically for Haltech I/O16

This loom is pinned exclusively for the Haltech I/O16 Input / Output Expander. Every circuit is allocated correctly for the module’s power supply, communication lines, sensor inputs, and low-current outputs — with no universal pinouts, repurposed circuits, or guesswork.

The result is a clean, predictable wiring system that supports stable sensor readings, reliable actuator control, and long-term electrical reliability in professional motorsport and performance applications.

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 motorsport wiring systems where durability and signal integrity are essential.

Key benefits include:

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

• Thin, lightweight insulation for compact, tidy looms

• High durability under vibration and continual movement

• Reduced risk of insulation degradation over time

This wire is selected for reliability — not cost.

Unterminated Configuration (Flying Leads)

This Haltech I/O16 loom is supplied in an unterminated (flying lead) configuration as standard, allowing complete flexibility for sensor selection, output allocation, and vehicle-specific routing.

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

Custom wire lengths, breakout configurations, and output grouping can be discussed prior to ordering if required.

Suitable Applications

This loom is suitable for:

• ECU input and output expansion

• Sensors (pressure, temperature, position, switches)

• Low-current outputs (relays, solenoids, warning lights, auxiliary devices)

• Motorsport and competition vehicles

• Circuit racing, drag racing, endurance, and time attack builds

• Professional workshops and motorsport fabricators

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 I/O16 Input / Output Expander connector(s)

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

• Built to order and quality checked prior to dispatch

Sensors, actuators, ECU, and the I/O16 module 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 for Professional ECU Expansion

The Haltech I/O16 is a motorsport-grade input and output expander designed to extend ECU functionality in complex builds. This loom is built to support it properly — without shortcuts, compromises, or unnecessary complexity — while maintaining professional motorsport wiring standards.

Select options above or contact us to discuss custom requirements.

Legal Notice

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