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  #1  
Old 09-11-2010, 06:18 PM
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Join Date: Jan 2006
Location: Portland, OR
Posts: 23
W116 instrument cluster wiring harness pinout

As I was replacing the oil pressure/fuel/temp gauge on my 79 300sd, the plastic part of the wiring harness came apart as I was unplugging it from the back of the cluster. There are numbers on the inside of the one plastic part, but I don't know which color wire corresponds to which number. I looked at a wiring diagram but it's of no help for this.

Can someone help on this one? Thanks!

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1979 300SD
1975 240D
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Old 10-03-2011, 04:34 PM
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Join Date: Dec 2002
Location: Jonesboro, AR
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Having this information would go a long way in helping me repair a couple of shorts in my '80 model 116 300SD. I do wish someone would post this valuable information. Thanks.
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  #3  
Old 10-03-2011, 05:22 PM
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Join Date: Jan 2006
Location: Portland, OR
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I got some help on the w116.org forum, but what was posted wasn't correct for a 300sd.

After 2 days of trying what I thought was every possible combination, I had to bite the bullet and take it in to my local MB garage. Even they had to do the research on the order of the wires. What seemed like a fairly easy fix turned out to be a rather costly endeavor.

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1975 240D
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