wire
what do you mean by making things better off? I have mine unplugged so i can turn the fan on whenever to cool off the engine. If that's what you're referring too, it's the plug that goes directly into the top of the AC, just take it off and let it sit aside. and whenever your car gets to the point where you wanna cool it off, turn on the max AC and then the fan will just come on. Ive been doing this for a while now and it works great.
Damon