Hello, I spent the last few days trying to diagnose three electrical problems on my 1983 Euro 928S, but I can't seem to find the solution.
1) Dash/Pod lights aren't working (only the radio light is working). Already tried bridging the two cables that connect to the rheostat, still no light. All Fuses/Relays are fine.
2)Brake lights aren't working. Fuse is ok, and I already replaced one of the two switches on the brake cylinder. I read somewhere that even with one switch working they should get power, and can't figure out a way to reach the second one in order to replace it. Bulbs are working btw
3) center air vent flap won't open. I figured it must be an electrical problem since sometimes it works so the vacuum line should be fine. All other flaps are working.
I hope someone comes up with an idea on what to check next since the basics (fuses, rheostat, etc...) have already been checked
Thanks a lot in advance to anyone who will help!