While you checking things, make sure all the connectors, and grounds are clean. Any place wires are together, relays, bodys ground, etc. I used an elctrical contact cleaner on all the connections. Just be careful with the connections. Don't force them apart, and don't pull on the wires.
I am in the midwest like you, and with the temperature changes, and the humidity, they can get dirty. Plus, if you bought this from a lot, it might not have been ran steady for a while, letting the connections to start oxidizing.
Good Luck with your new truck!!!
Last edited by brookwood61; Oct 30th, 2008 at 04:35 AM.