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Old 08-01-2002, 01:02 AM
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1994 S500 wiring harness

Just got my car back from the dealer, who changed the wiring harness and MAF sensor. It drives much smoother now but why on earth did this cost so much? Does anyone have a picture of what this harness looks like, I thought it was just a plug or something with lots of wires, is it a magical ball of light? I would just be interested to see this part, it must be something quite spectacular.
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Old 08-01-2002, 03:45 AM
David C Klasse's Avatar
CheFrac is Back!
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
I had trouble understanding it too at first.

It consists of all the electrical wiring in the engine bay. So yes, it's quite a project.
2006 E350 w/ 155k miles (Daily Driver)

1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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Old 08-01-2002, 03:56 AM
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So is it like all the wires that connect everything together. Knowing the W140 it must be massive, like a giant spider. Could a tech or someone please take ones of these out of the box and take a picture, I'm dying of curiosity about this part. Oh, and by the way does anyone know how many computers are in the W140 chassis - just one of those useless facts we all love. The W140 electrical system must be an amazing structure, imagine if all electrical components and wiring were removed and displayed.
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Old 08-01-2002, 10:48 AM
JimF's Avatar
'94 S500: only 793 sold!
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,924
Me too . . .

If you happen to get a picture of a wiring harness, please post it. I have never seen one either. Would like to add it to my page.

Re computers, there's at least five (5);
1) Base module
2) Diag module
3) ABS module (brakes)
5) LH-SFI module

There's also an ASD module and even more for the S600!
Check out my page (www house button below) for more info on each module including operation and inter-workings of each.
Regards . . . . JimF
'94 S500 Cpe

Visit my Mercedes Web Page
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