I got in the truck Friday night and turned on the headlights and everthing lit up, Dash taillights ECT, except the head lights!! I clicked them to high beams and they were fine. I messed with is some on the drive home and they would come on some times when I hit the dimmer switch and sometimes they would not. I suspect a relay, but did not have time to go get the parts on Sat. I am hoping it is not the dimmer switch. Anybody got any other sugestions.