1973 280SEL Questions - Page 2 - Mercedes-Benz Forum

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post #11 of 16 (permalink) Old 01-26-2010, 05:42 AM Thread Starter
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Date registered: Jan 2010
Vehicle: 1973 280SEL 4.5, 1971 280SL (prior), and lots of Jaguars
Location: Connecticut, USA
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Originally Posted by drew56cus View Post
The boot, sorry trunk light should be in the trunk lid itself. A plastic fitting screws into the bottom edge of the boot lid and has a spring loaded plastic rod that retracts when the trunk is closed, turning the light off.

I am playing with a W108 loom at the moment (it is all over the floor of the shed) and I seem to recall the wires for the rear light go up the RH A pillar and along the roof cant rail, behind the headliner. I think they are red and grey, and have little round black plugs under the dash near the fuse box. Will have to check when I get home.
Drew in Oz
Thanks for the info - I'm going to poke around this morning in the boot, trunk, whatever . I need a new headliner anyway, so I may start pulling it down. Thanks again.
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post #12 of 16 (permalink) Old 01-26-2010, 02:59 PM
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Had a look at my loom this morning. Now you say that the front interior light works. Well, this runs off the same plug (on the back of the dash switch) as what the rear light does. The front light is the red and grey wires, and the rear is a blue wire. All three go up the RH A pillar, with the blue wire going down the RH roof rail to the rear light.
Take the cover off the rear interior light. You will see that the blue wire has a round plug on it so that the whole light can be removed easily. There is a brown earth wire from the light fitting screwed onto the roof metal. So check if you have power getting to the socket when it is meant to be on. If so, it may be the bulb or earth is no good.
Cheers,
Drew
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post #13 of 16 (permalink) Old 01-26-2010, 11:32 PM
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You can probably find a good deal online for a new headliner. I know I have seen some ebay vendors selling them for cheap.
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post #14 of 16 (permalink) Old 01-27-2010, 08:23 AM Thread Starter
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Date registered: Jan 2010
Vehicle: 1973 280SEL 4.5, 1971 280SL (prior), and lots of Jaguars
Location: Connecticut, USA
Posts: 10
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(Thread Starter)
Quote:
Originally Posted by drew56cus View Post
Had a look at my loom this morning. Now you say that the front interior light works. Well, this runs off the same plug (on the back of the dash switch) as what the rear light does. The front light is the red and grey wires, and the rear is a blue wire. All three go up the RH A pillar, with the blue wire going down the RH roof rail to the rear light.
Take the cover off the rear interior light. You will see that the blue wire has a round plug on it so that the whole light can be removed easily. There is a brown earth wire from the light fitting screwed onto the roof metal. So check if you have power getting to the socket when it is meant to be on. If so, it may be the bulb or earth is no good.
Cheers,
Drew
Thanks. I had a look this morning, and found the exact wiring you described. Moreover, I popped the rear dome light into the front dome's spot to confirm that the fixture/bulb works. My voltmeter shows no power to any of the rear three lights (dome + two courtesy/reading lights). I did see something interesting when I was poking around in the rear (that sounds funny), which was an unattached double tan line, which I believe to be a ground for something. Can anyone confirm? Although when I secured this mystery line to the nearby grounding screw, nothing changed with the lights. Should I start removing the headliner? I found a reputable shop that will do the replacement for about $800, although he says the rear window must be removed (and possibly the front). Thanks for the help. BTW I'm in Connecticut USA so prices are higher in this part of the country.
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post #15 of 16 (permalink) Old 01-27-2010, 08:35 AM Thread Starter
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Date registered: Jan 2010
Vehicle: 1973 280SEL 4.5, 1971 280SL (prior), and lots of Jaguars
Location: Connecticut, USA
Posts: 10
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By the way, here's my beauty. Thankfully, the original owner was super meticulous and serviced her every three thousand miles, saving all receipts, etc. She wasn't running when I purchased her (for only $900), having sat for several years, but I got her running with only a little effort.. really just a relatively simple tuneup, new fluids, battery, brakes, and a repair to the intake manifold, and now she's back on the road running as new. I really lucked out as the body and interior are in mint shape. I spent a week with a Porter Cable random orbital buffer and the paint lustre really came through. ...Just thought I'd share the background.

1973 280SEL Questions-img_3719.jpg
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post #16 of 16 (permalink) Old 01-27-2010, 09:04 AM Thread Starter
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Date registered: Jan 2010
Vehicle: 1973 280SEL 4.5, 1971 280SL (prior), and lots of Jaguars
Location: Connecticut, USA
Posts: 10
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(Thread Starter)
Quote:
Originally Posted by drew56cus View Post
The boot, sorry trunk light should be in the trunk lid itself. A plastic fitting screws into the bottom edge of the boot lid and has a spring loaded plastic rod that retracts when the trunk is closed, turning the light off.

I am playing with a W108 loom at the moment (it is all over the floor of the shed) and I seem to recall the wires for the rear light go up the RH A pillar and along the roof cant rail, behind the headliner. I think they are red and grey, and have little round black plugs under the dash near the fuse box. Will have to check when I get home.
Drew in Oz
OK great, I found the little thing, and a simple bad bulb was the problem.
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