MicroTech LT-32c 'Big Bertha' Motorsport Wiring Loom

Motorsport-grade ETFE (MIL-W-22759/16) wiring loom engineered specifically for the MicroTech LT-32c Engine Control Unit.

This wiring loom is designed for builders who require an uncompromising, professional-grade electrical foundation for a MicroTech LT-32c–controlled engine. Hand-built using MIL-W-22759/16 motorsport-grade ETFE wire, it is intended for extreme-performance and motorsport applications where heat, vibration, electrical noise, and very high system complexity are part of the operating environment.

The MicroTech LT-32c represents the most powerful and highest-capacity ECU in the MicroTech LT-series, developed for large-cylinder-count, multi-bank, and high-output engines. This loom removes the compromises commonly found in universal or automotive-grade wiring.

Designed Specifically for MicroTech LT-32c

This loom is pinned exclusively for the MicroTech LT-32c ECU. Every circuit is allocated correctly for the ECU’s extensive engine management inputs, outputs, power supply, and communications — with no universal pinouts, repurposed circuits, or guesswork.

The result is a clean, predictable wiring system that supports accurate sensor data, stable ECU operation, and long-term electrical reliability in the most demanding 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 high-density, high-channel-count motorsport wiring systems.

Key benefits include:

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

• Thin, lightweight insulation for compact looms despite extreme I/O density

• Exceptional 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 MicroTech LT-32c loom is supplied in an unterminated (flying lead) configuration as standard, allowing complete flexibility for complex engine layouts, injector and ignition configurations, and advanced system routing.

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

Custom terminations, wire lengths, advanced I/O allocation, and system-specific provisions can be discussed prior to ordering if required.

Suitable Applications

This loom is suitable for:

• Elite-level motorsport and competition vehicles

• Large-cylinder-count and multi-bank engines

• Drag racing, roll racing, and extreme power builds

• High-output turbocharged and supercharged engines

• Professional race teams and specialist performance workshops

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

What’s Included

• MicroTech LT-32c 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 fixed deadline, please contact us prior to ordering.

Built to Support MicroTech’s Ultimate LT-Series ECU

The MicroTech LT-32c is the flagship ECU of the LT-series, engineered for the most demanding performance and motorsport applications. 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

MicroTech® is a registered trademark of MicroTech EFI. This product is not affiliated with or endorsed by MicroTech.