LS4 Fan Kit

This harness moves the relays externally outside of the fuse box and solves the issue with the blue wire melting at the back of the fuse box, and some times the white one.

This fan kit ties into the existing fan harness wiring behind the passenger headlight.

This fan kit includes a on/off switch used for turning on and off for diagnostic purposes and also until the vehicle can be tuned.

The vehicle should be tuned for this to work as intended. Otherwise, the way it is connected it will not turn on until 230 degrees, which is the factory setting the high fans come on at. During tuning this will be changed too 195.