The Elite 550 & 750 Basic Universal Wire-in Harness is a precision wiring solution designed for dedicated race cars, engine swaps, and custom wiring projects. Model HT-140602, with a practical length of 2.5m (8'), provides a reliable bridge between your Haltech Elite ECU and the engine system.

At one end, the harness features ECU connectors, while the opposite end presents unterminated wires. All wires at the unterminated end are colour coded and clearly labelled to align with the detailed wiring diagram, ensuring a confusion-free installation. Simply connect your Haltech ECU to the terminated end, follow the wiring diagram for every engine connection, load your base map, and you’re ready to go.

The wiring diagram is accompanied by the full ECU manual and software, located on the CD or USB key provided with the ECU, so you have comprehensive references during installation and configuration.

Harness features

When installed in conjunction with a Haltech Elite ECU, this harness opens the door to extensive performance modification and tuning. Fully programmable systems let you tailor fuel and ignition timing to your engine’s needs, unlocking maximum output across operating conditions.

• Universal wire-in harness with ECU connectors on one end and colour-coded, labelled unterminated wires on the other
• Length: 2.5m (8') for flexible routing in a variety of chassis
• Designed for use with Haltech Elite ECUs to enable advanced tuning and performance optimization
• Wiring diagram plus full ECU manual and software included with the ECU (CD/USB)
• Ideal for dedicated race cars, engine swaps, and custom wiring projects