My left turn signal doesn't work on my 1990 760 turbo. When turning on, nothing happens. Right turn signal works fine. All the lights work when using the 4-way flashers.

I assume it can't be the bulbs because the 4-ways work.
Both left and right work off the same fuse so that's not it.

I don't know much about the electrical system but I thought that it might be a relay/flasher unit. I looked around and couldn't find a diagram of which relay does what. I tried to buy a new one hoping that I could match up the new to find the old. The local auto parts store didn't carry one (no surprise). I then tried Swedishengineering.com and they didn't have one listed either. No I'm really starting to wonder.

I took out each relay one by one and tested the turn signals after each removal. I ended up taking out all the relays and the right signal still worked! Maybe there isn't a relay for the turn signals.

I've hit a wall. Does anybody have any suggestions for me?

Thanks