I just bought a 97 f-150 from my dad, there are some electrical issue's but the main one seems to be battery drain.

I have noticed with the truck off key in my pocket, the a/c doors keep trying to move and the a/c head has power to it.

I know the engine has been replaced, with about 20k on it.

The temp gauge pegs w/o getting hot, and it even turned over once while we were getting in the truck. Again key in pocket.

I am a newbie here but I think "Christine" may have a sister.

Any thoughts....

 

Leaky Windshield Syndrome would be my first inclination.