Which wires switch the fans on and off, anyone.....

 

Anyone have wire diagrams?

 

the relays are on the left side of the engine bay. There is a grouping of four bolted on a metal bracket in front of the strut tower. I just played with mine till i got it to work



I'm assuming you are using an aftermarket ECU to trigger the fans?



I found the highspeed setting relay, and ran the signal wire to that.

 

Thanks. Its for my brothers s5 which has pfc