Ditch the old crusty engine harness for one of our custom harnesses. harnesses are custom made to suit your specific needs. Harness is left almost 100% completed to ease installation. We leave the common wires so you can finish up the installation which include (+12v ACC, Chassis Ground, Fan Aux, Fuel Pump Aux, Tach or even Boost Solenoid, Anti-Lag, Pressure Sensors and much more). Instructions included, core has to be supplied. All connnections are crimped and labeled. Harness still requires completion such as: wiring a fused +12V, Battery 12V, Chassis Ground, Tach output and optional Fan and Fuel Pump signals to relays.