Will do. It figures once I spent the money to make it work, the thing won't fog over. Before I got it wired up, just about every morning it was fogged over. Oh well. On to the next project on my truck.

 

well then you might have tapped into constant power so it might always be on, which is not good.

Get a multimeter and make sure you have 0.00V from the positive lead to ground at the window connector, with the switch and truck turned off....

 

I know!! That's exactly what I was thinking!!

 

Will do. I checked with my test light when I was installing. It wasn't getting power until I turned the ignition switch on and flipped the switch. Forgot all about my voltage meter. Will test it with that as well. Thanks for the tip.

 

I checked with my meter. Showing 0.00 when ignition and switch are off. Showing 7.58 when key turned to run and switch on. Showing 9.79 when truck cranked and switch on.