One of my headlights wouldn't go down. So, I replaced both actuator relays. No help. Then I replaced the headlight switch. Now both headlights will go up, but neither one will go down. I checked the tail-light fuse. It's fine. Any ideas? I removed the isolation relay and cleaned the contacts. Still no help. My guess is that I installed a faulty headlight switch. Maybe I need to build an isolation relay per that fiero forum. I'm kinda stumped. Any ideas? And yes, I did search.

 

I removed the dash board and gauge cover again. I put the original switch back in, and now I'm back to just one headlight not lowering. The new switch was a dud. I'll order an AC Delco this time.