ok so i have a gauge and a relay for the fan to turn on at the given temp set at, i need to know where a switch on that is that gives it 12vs when the key is in on or start position, giving me the wire color or something would be great cause i dont plan on having a key to start it anytime soon

 

Car info?

On an S4 the B/W wire on the 6-prong diagnostic plug (next to leading coil) will provide switched 12V power under the hood. If you need switched power inside the car, you can probe around with a multimeter, or look at the FSM wiring diagrams.

 

well last night when i was doing pretty much everything i went and did the key to probe thing and i found a wire that when you put the key to on it stays lit and when you turn it off its off so