w111 wiring diagram or help - Mercedes-Benz Forum

 
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post #1 of 9 (permalink) Old 09-20-2008, 11:13 AM Thread Starter
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Date registered: Jan 2008
Vehicle: 1971 280se conv. European spec 6 cylinder imported here years ago and converted to a V8
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w111 wiring diagram or help

All,

I am stuck with not knowing which wires connect across between each rear lamp assembly on my 71 280se. If someone has any tips, or a wiring diagram which shows what should be connected to what, I would be eternaly grateful.

Spent probably 7 hours and countless fuses trying to work this problem out and it doesn't seem to follow German or electrical logic!

Thanks

Adrian
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post #2 of 9 (permalink) Old 09-20-2008, 12:56 PM
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I don't have a plan for the W108.... But since it from 71, I would guess Mercedes had similar wires on many models..
Then you could try these, that are used on the W115
Brown is as usual groundwire.
Black/White -- Left turn signal
Grey/Black -- Left parking light(running light)
Grey/Yellow -- Both sides backup light
Black/Red -- Both sides brake light
Black/Green -- Right turn signal
Green/Red -- Right parking light(running light)
and
Grey/Violett -- Lisenceplate light (Comes from the left side)

1991 W140 400 SE - SOLD !!
1973 W115 200 -For sale as project.
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post #3 of 9 (permalink) Old 09-21-2008, 08:01 PM Thread Starter
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Thanks for the info but I should have explained a little more.
There is a connecter cable of 3 wires that goes across the rearof the trunk from one set of lights to the other. At some point, someone had replaced the wires on one side and joined them to the three wires coming from the other side. Unfortunately, the new wires are not the right color code.

At the moment, the wires from the drivers side come from the turn signal, reversing light and brake light circuit, so are basicaly the three vertical terminals of the connector block. On the passenger side, they go to completely different circuits.
I have all my lights and hazards working on the car without joining these wires but cannot get the turn signals to work. I connected them in a way that the turn sigals worked but using the brakes caused the circuits to fuse. Basicaly, I have tried a buch of solutions over several hours which haven't worked and have left me with a pile of blown uses. I have fully checked, cleaned and made sure all connections are working and there are no bad grounds or faulty bulbs.
I am guessing the drivers side is correct as the wire colors match the right circuit as described above. If someone could take a look and tell me which wire from the left goes to which terminal on the right, it would be really helpful.

Thanks

Adrian
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post #4 of 9 (permalink) Old 09-21-2008, 10:50 PM
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Vehicle: 73 280SE 4.5, 71 300SEL, 03 BMW Z4, 72 Fiat 850, 80 Triumph TR7, 85 Porsche 911
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Take a look at the online resources portion of the forum. I placed a wiring diagram there for my 280SE (it's a '73 though). Can't imagine there would be a huge difference in wiring in two years for the same car ...
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post #5 of 9 (permalink) Old 09-22-2008, 11:02 AM
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Date registered: Jul 2004
Vehicle: 1971 280SE 3.5 Coupe
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Adrian,
I have the original wiring diagram from the owner's manual on my 111 3.5. If you don't get it figured out I can fax it to you. I had to blow it up to read it so not sure how it will fax. I could mail you a blown up copy if you like.
Tony
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post #6 of 9 (permalink) Old 09-22-2008, 05:37 PM Thread Starter
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hey Tony,

Not sure how good you are at reading the diagram but all I literaly need to know is how the three wires connect between the two rear lights. From what circuit on the left, to what circuit on the right. Each of the light clusters has a feed from the main circuit, but they are also connected across each other, so it may be simple to see on the diagram. Maybe you can see which wire goes where and just drop it in an email or post it here?
I don't have a fax but if you could email a scan of the diagram my email is adrian@interiorphotography.net or I will try and find someone with a fax. machine.

Thanks so much

Adrian
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post #7 of 9 (permalink) Old 09-22-2008, 09:49 PM
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I will see if I can scan it tomorrow and send it to you.
Tony
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post #8 of 9 (permalink) Old 09-23-2008, 11:17 AM
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Scanned and emailed. let me know if you don't get it.
Tony
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post #9 of 9 (permalink) Old 10-25-2010, 04:53 PM
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hi i noticed you seem to know alot about the wiring. i have a 1971 w111 290se 3.5 coupe the tach connector wires have come free from the holder. i dont know the correct positon to replace them. there are six hole in the connector and only 4 wires ??
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