Alright, I think this is a weird one.
My car is an 85 Gs with an S4 13b swap. The car runs fine, but as I installed my stereo, I somehow popped the taillight illumination fuse. When I went to grab another fuse, I noticed that my drivers headlight was up. When I hit the retractor or headlight switch, it goes down. It's almost like the polarity has been reversed. The passenger side works fine though. Any suggestions on how to fix this?

 

Well, okay then.

After doing some diagram research and multi-meter testing last week, I came to the conclusion that the headlight switch had indeed reversed its polarity. I don't have another switch, so I de-pinned the up and down wires (The Red/Yellow, and Red wires for the drivers side) and switched their positions. the headlights work like a charm again.