I have an 89' 740 GL. I was wondering if anyone could tell me if there is a relay that controls the brake lights, and if so where I could find it. The problem that I am having is that only my 3rd brake light works (the one in the rear window). The regular brake lights will not work. All other lights seem to work fine and I have checked all the fuses and bulbs. If anyone has any advice I would greatly appreciate it.
Thanks, Charles