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Electrical problem with window switches and dash lights.

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Old 07-26-2017, 01:25 PM
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1990 300e
Electrical problem with window switches and dash lights.
Ok for the last year. I have been trying to figure out this problem I am having. The lights will randomly come on whenever they want and the only way to get them off is to turn the headlight switch on and off 1 or many times it depends on how it feels. I replaced the headlight switch to see if that was it but no dice. Right now I have my cluster out and I saw this relay, that square plug will turn the lights off if I unplug it, is it possible that that would need replacing. It looks kinda hard to remove it. Attached some pics of the relay and the lights that I am talking about.




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Old 07-26-2017, 03:44 PM
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1999 E300TD
Post the VIN and I will review the wiring diagram.
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Old 07-26-2017, 05:04 PM
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Thank you so much. I was looking at the diagrams in the haynes manual but I have no clue what Im doing.
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Old 07-27-2017, 04:28 PM
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Originally Posted by hanly2

Regrettably only the mechanical info is available with my copy of WIS.
The electrical wiring diagrams were in a paper manual not incorporated into WIS.
I am sorry I can't help
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