just got an '82 300sd....it seems that the lights are stuck in highbeam. the pushing the stalk forward will not switch them out of highbeam. (trying to flash them doesn't do anything either. I also noticed the fog light don't work when pulling out the headlight dial. (I pulled the highbeam fuses to see if that made any difference but obviously just left me with no lights at all)
I checked fuses....everything is good!
Is their a relay I can check??? i don't have a diagram of the relays in the fuse box, so i have no idea which one would be for headlights, if there is one.
any suggestions would be much appreciated,
thanks,
-Justin

sounds like a bad stalk to me.
fogs don't work when in high beam mode.
I will check fuse# tonight if you don't have it yet.
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

The combination switch is shot. Eventually they'll get stuck on high beam. The SD is very close to the same issue.

combo swith is the stalk?? right?

is this an easy replacement on these cars?
any good sources for parts?

thanks for your help!
-Justin

The stalk that has the lights, turn signals, and washer is called the "combination switch".

It's a bit of work to change it because the steering wheel and the cluster must be removed.

any way to temporarily trick it back in to low beam until i can get a new switch in?

Pull out fuses 2 and 4.

Add a 12V jumper to fuses 6 and 8 when you want low beams.

Not the most elegant solution, but, it'll work temporarily.

thanks for help & suggestions

I have one that I pulled out of my '82 300D. Worked.

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83 SD

84 CD

Don't think it will fit a W-126......

Just looked up part #'s for both, you're right BC I wouldn't try to fit. Sorry.

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83 SD

84 CD

jumpers work for now .....people will surely appreciate not being blinded by the high beams
still hunting for combo switches...
if anyone comes across one, let me know
cheers,
-J