Greetings!

I am the owner of an '87 240dl wagon.. It's recently developed a strange electrics bug: I was driving at night with headlamps on, rear fogs on, and radio on. Hit the bright switch, and the radio goes out. Then, subsequently the following day, the bulb warning light is illuminated. Right rear running lamp is out, bulb is fine, replaced nevertheless. Now, guage cluster lamps inop, and for a short time, the heater fan was inop. Now it seems to work fine, as do the wipers, turn signals, brights, etc. Summary:

Right Rear Taillamp: out.
Radio: out.
Dash lights: out. (incl. accessory tachometer)
Bulb Failure Lamp: illuminated.

Changed the offending taillamp bulb, and re-bent all contacts on associated module. All fuses seem intact, though the failing systems all seem to be on different fuses altogether.

Any suggestions on where to start?

Cheers,

Nate.