Download Haltechs Wiring Diagram Here The Haltech HT-140402 Elite 550 Basic Universal Wire-in Harness is designed for simple, reliable integration of your Elite 550 ECU into a wide range of engine applications. Featuring ECU connectors on one end and unterminated, colour-coded, labelled wires on the other, this harness is ideal for custom wiring jobs, engine swaps, and race car builds. Manufactured from high-quality automotive-grade wiring with durable sheathing, the Elite 550 Basic Universal Wire-in Harness ensures secure electrical connections and long-term performance in both street and motorsport environments. Pair it with your Haltech Elite 550 ECU for precise engine control and enhanced reliability. Key Features• Genuine Haltech universal wire-in harness for Elite 550 ECU• ECU connectors on one end, unterminated wires on the other• Colour-coded and labelled wires for straightforward installation• Built with automotive-grade wiring and protective sheathing• Suitable for street, track, and motorsport applications Technical Specifications• Part Number: HT-140402• Compatibility: Haltech Elite 550 ECU• Harness Type: Basic universal wire-in harness• Installation: Professional installation recommended