So my turn signal works but won't shut off when the wheel comes
back to center. Bad combo switch?
Are 126 gen I & II combo switches the same?
Tried to read through past posts but too many to go through!

Thanks,
Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

My newer 300SD has this problem as well. You will need to replace the turn signal stalk. I have one in my 1990 300SE parts car, which is a gen 2 but I have not had time to pull the part out yet. If I get to it before you, I will let you know if it works. I am fairly certain it will.

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

Yep, it's the combination switch. Had this problem on mine as well.

As far as gen I vs gen II, it appears they have the same part number here at Peach Parts. I believe the difference is an added contact for the airbags.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )

You must remove the steering wheel to get to the combination switch.

See post #3 here: '82 300SD steering column turn signal lever broken

__________________
83 SD

84 CD

Thanks for the info.
OEM MB switch is almost $200.
PNP one is $13. Looks like a trip to the junkyard once it warms up
to look for a low mileage 126.
27* here this morning, which is pretty cold for Northern Calif.

I've turned into a wimp since moving here from the Midwest.
Don't miss scraping those windshields, though.

Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

Looks like on the gen2, there is a plate that goes over the turn signal assembly that is for the air bag. It unscrews with 3 phillips screws and moves out of the way. The rest of the switch looks the same as a gen1. I am going to toss it in my 300SD and see what happens.

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

pics

Attached Thumbnails

   

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

I just finished the install and test drive. 2nd gen will work in the first gen.

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

Eatont9999,
You beat me to it! Of course, I had to go pull one from the yard.
Not too bad as someone already had the steering wheel off of a
'90 SE. Also, I live about 5 miles from a PNP.

Got mine installed and works like a charm.

So, yes, double confirmed Gen I & Gen II combination switches are interchangeable.

Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

Nice to hear you had the same result as I did. No race. I have been putting off the replacement of my turn signal stalk for no good reason. 30 minutes and I was done A-Z.

Now, if the adjustable steering column will fit into a Gen 1...

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge