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  #1  
Old 09-20-2015, 02:36 AM
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Join Date: Sep 2015
Location: Orlando, Fl
Posts: 37
W115 1972 220d turn signal issues, and other electical questions.

So some issues with my recently aquired /8
When I picked up the car, the drivers turn signal was stuck on...I pulled the flasher/hazard relay apart, noticed that the board was sitting outside of the guide, and that it was likely causing some sort of issue.












I took it apart, and reinforced the guide areas with superglue, and re-purposed zip-ties. Ghetto I know.
It doesn't seem to have worked. Now when I plugged the relay back in, the right turn signal was not working at all. However, if I push the harness into the relay harder, the turn signal comes on...leading me to believe that I fixed nothing, which is ok, but I need an idea of what to do to fix it.

I also took, the multiswitch off and took it mostly apart, and did not see any issues, so at this point, I do not know if it is in the switch, or in the relay/flasher. I am pretty sure it is either in the flasher, or in the wiring between the flasher, and the multiswitch.

I am considering seperating the turn signal from the hazard flasher, but I don't understand how the electronics work on this car. I do not know if the turn signals have to be wired into the hazard relay in order for the hazards to work.

If someone has the turn signal wiring diagram for a 1972 220d that may help me sort out, what I can and can't do, and what troubleshooting I can do.

I also have several wires, in various places that are connected to nothing.
I will post the pictures and hopefully we can shed some light on some things.
Some of the wires are near the a/c compressor. And there is evidence that atleast one of them connects to the casing.
The other wires are under the dash/in the center console, and I am pretty sure are all related to the radio.

And the last wire is a blue one, coming from the gauge cluster...

My air conditioning doesn't work, I can't even figure out how to turn the blower motor on.

Thank you all in advance.
Ron











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  #2  
Old 09-24-2015, 03:11 AM
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Join Date: Sep 2015
Location: Orlando, Fl
Posts: 37
I will report back here, to myself when I figure this all out. Maybe it will be of help to someone else down the line.
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  #3  
Old 09-24-2015, 12:51 PM
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Join Date: Sep 2011
Posts: 588
If you feel like checking to see if the same (or a compatible) part was used in a 1975 240d (for which I can get the VIN if needed), I can check to see if I still have the hazard switch from my part out. There's only one guy I know that could have possibly bought it from me. Otherwise, I still have it.
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Past mb: '73 450sl, '81 280slc stick, '71 250, '72 250c, '70 250c, '79 280sl, '73 450sl, parted: '75 240d stick, '69 280s, '73 450slc, '72 450sl,
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  #4  
Old 09-25-2015, 03:32 AM
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Join Date: Sep 2015
Location: Orlando, Fl
Posts: 37
Hey fonzi, I will look into it, but I am quite sure that those cars used a flasher under the dash, and the hazard flasher was on a completely different circuit.
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  #5  
Old 11-18-2015, 04:31 AM
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Join Date: Sep 2015
Location: Orlando, Fl
Posts: 37
A good fellow on here named Scott has sent me 2 flashers to test out, I will be testing them today, or tomorrow.
Still no clue's on the other stuff, though I have not fussed much with it. I will wait till the car is on the road, to do any real life diagnostics with the air conditioning.
I am not starting the car right now, so I don't want to kill the battery in attempts to sort these issues out.
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  #6  
Old 11-19-2015, 11:41 PM
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Join Date: Sep 2015
Location: Orlando, Fl
Posts: 37
A "new" flasher relay solved my problem!
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