General Maintenance & Repairs - Turn signal / brake light problem

The passenger side turn signal and brake light doesn't work. I've turned on the hazards and all bulbs work but the passenger rear. I replaced the bulb and still doesn't work. I turned them 180 deg, still no work. I put the driver side bulbs (that I know work) in there and still no worky. The parking lights work ok, so that more or less rules out a bad ground. Anyone have any other ideas what might be the problem? This is driving me nuts.

On a Trans or Maro??? Sounds like you might have a corroded socket possibly. All of the bulbs maybe working but almost all of them are dual filament. If one filament goes out on a side, you'll normally lose turn signals on that side. That includes side markers also. It's happened to me until I fixed my front turn signal lights which were extremely corroded and had similar problems.