We are offering our very high quality Haltech Patch harnesses for sale, separate of our ECU kit.

Currently offering for Elite 550/750 and 4AGE 20V engines.  4AGE 16V and BEAMS 3SGE to follow!

Patch Harness

• Interfaces between Haltech ECU and OEM style Engine harness (ecu connectors)
• Includes break out connectors for Coil On Plug conversion
• AUX I/O break out for Radiator Fan, Wideband O2 input, Rev limiter, etc. 
• Milspec grade wiring and high quality terminations

Full Harness - *Discontinued*

• Interfaces between Haltech ECU and Engine directly
• Includes all major engine sensors - including VVT, 02 Sensor, TPS, etc. 
• Details include two types of oil pressure sender connectors to retain your gauge cluster functionality
• AUX I/O break out for Radiator Fan, Wideband O2 input, Rev limiter, etc. 
• Milspec grade wiring and high quality terminations