Help! Brake lights are suddenly out on my '76 240D. Checked the fuse, checked the bulbs, checked the switch at the pedal, and lost the switch wire where it goes into a big bundle under the dash. Does it all run through a relay somewhere over near the emergency brake? Eliminated the wipers and turn sig. relays, but can't figure the rest. BTW the foot switch for the wipers suddenly makes the wipers actuate