W108 under-hood wiring - Mercedes-Benz Forum

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post #1 of 19 (permalink) Old 08-19-2015, 08:28 AM Thread Starter
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W108 under-hood wiring

I have a 1967 W108 250s project going on. It came to me with much of the wiring and relays disconnected, and the Haynes manual wiring diagrams suck. Does anyone have a GOOD wiring schematic for everything under the hood and/or would someone be kind enough to post some under-hood pictures (or video) that I could look at to try and figure out where this huge bowl of spaghetti goes? I would really appreciate it.
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post #2 of 19 (permalink) Old 08-19-2015, 08:37 AM
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I am parting out a 1969 280s, and assume both cars have zenith carbs and would be similar. I don't think I've cut any wires yet, so hopefully I can help next time I go to the car.

Continuing the search for correct wiring diagrams is smart.

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post #3 of 19 (permalink) Old 08-19-2015, 08:45 AM
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I am going to upload all the engine bay shots I have from my 1969 280s. Please take them with a grain of salt.

W108 under-hood wiring-imageuploadedbyautoguide1439995301.467653.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995318.601780.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995344.217582.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995369.451485.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995388.750861.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995411.400926.jpg
I removed the distributor cap and wires myself. But this is the current condition.
W108 under-hood wiring-imageuploadedbyautoguide1439995429.251421.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995479.700803.jpg
W108 under-hood wiring-imageuploadedbyautoguide1439995496.517525.jpg


That's everything. I've got right now, but can take detailed pictures of any area needed at a later date.

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post #4 of 19 (permalink) Old 08-19-2015, 09:16 AM Thread Starter
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Awesome. I appreciate the help. My main area of concern is on the passenger side fender near the firewall. There are a bunch of relays mounted there and I've no clue what any of the wires from them go to. Beyond that, pretty much all the wiring on the passenger side coming from the wiring harness. ... not a clue what any of it goes to. So any help anyone could offer would be awesome.
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post #5 of 19 (permalink) Old 08-19-2015, 09:52 AM
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Where are you located? (You can fill out your profile to assist others in helping you.)

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post #6 of 19 (permalink) Old 08-19-2015, 10:15 AM Thread Starter
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I'm in Oklahoma City
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post #7 of 19 (permalink) Old 08-22-2015, 12:40 PM
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I have the same car 67 250s
ill click some pics of the relay center this evening

a couple of months I posted a thread on fog light installation there are a few photos in that thread
http://www.benzworld.org/forums/vint...-wiring-3.html

I can trace wires if needed just load some pics of wires in question

Last edited by helleifenbein; 08-22-2015 at 12:43 PM. Reason: add link
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post #8 of 19 (permalink) Old 08-23-2015, 09:04 AM Thread Starter
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Awesome, I appreciate the help!
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post #9 of 19 (permalink) Old 08-23-2015, 09:11 PM Thread Starter
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OK, so here's what I got going on. I got all of these hanging from wire from the hood to keep them up and out of the way. On the plate, to the far left, is some sort of fuse box with no fuses in it. To the right of that, there is some sort of relay. Below both of those is some other sort of relay. On the far right, hanging by itself is another relay of some sort. I think it might be a part of the charging system maybe? Any clues what these are and what they go to? And to the right of that, I have a wad of wires rolled up that come from the wiring harness. I think maybe these might go to the carburators??

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post #10 of 19 (permalink) Old 08-23-2015, 09:15 PM Thread Starter
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Here's another quandary. I got these 4 pigtails that come out of the firewall close to the master cylinder. Any clue what these are for?
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