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Old 05-26-2011, 03:40 PM
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Join Date: Aug 2010
Posts: 36
Air conditioner problems in my Mercedes

I have a 1985 300SD and the air conditioner stopped working the other day, compressor is good, think it must be an electrical problem. When I try to hot wire it the clutch locks up.
Does anyone have a wiring diagram so I can check everything is connected right?
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Old 05-26-2011, 03:43 PM
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Join Date: Mar 2009
Location: Philadelphia
Posts: 5,337
I would recommend a search for the KLIMA relay, 85+ w126 had them IIRC, and it is connected to the AC system electrically. There is also a cutout switch for when the compressor is low on refrigerant so the compressor doesn't burn up.
Current stable:
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Past: 135i, GTI, 300E, 300SD, 300SD, Stealth
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