where is your controller? (target vehicle is 04 f150 Screw)

 

I mounted mine on the top of my battery. That way its away from heat sources and stays a little dryer being higher up.

Other mount them behind the passanger side headlight (by the windshield washer fuild tank).

Dont mount it to close to the radiator, as the heat exposure has been knowen to cause controlers to fail.