Does anyone know what the 4 wires on the radiator cooling fans are for? I know one is ground and one is 12V supply but what about the other 2? One has
5V on it and the other has 10V. The reason I'm asking is that these fans are causing a great deal of noise on AM and CB radio reception. I was able to quiet it with some capacitors on the various wires but I really need to know a little more about the system so I don't damage anything. If someone has the wiring diagram,a link or just an explanation, it would really help.Thanks, Chris