Thanks for the response. I messed around with the car today. Just for the hell of it I threw another dash switch I got from the junkyard since I was out there for another car of mine, and it still didn't work. After reading your reply, I started checking the wiring. I found that if I jumper a wire from the tan line coming out of the dimmer under the dash directly to the tan line at either lamp socket, both bulbs light, so I'm thinking I got a wire break somewhere between the dash and the headlights. I will get on it again with a test light this weekend, and see if I can trace down the break.