How weird! 2005 Magum RT 136K

AC blows cold until the headlight switch is turned on. Fan always works but just warm air with lights on. Turn lights on and off and AC starts again for a couple minutes...

Someone told me to check AC relay? Where is that?

Thanks for any help you can provide.

My first new car and I love it. Can't seem to let it go and nothing else out there to take its place...

Here's some eye candy for you (our other Mopar...):
Hey! There's the Magnum in the background (like 10 years ago)!!!




Mike