1990 735iL Tail Light
I need help with a right side tail light problem. (The left side works fine.) There is only 9 volts at the bulb terminal, without the bulb, which then drops to zero when the bulb is inserted. The fuse is good and measures 12 volts, so somewhere I think there is a poor or corroded connection. The tail light wire has only 9 volts where it enters the trunk. I don't have a wiring diagram and would appreiate any suggestions on where to start looking.