Thread: Funky grounding issue
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Old 06-14-2010, 10:09 AM
micalk micalk is offline
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Join Date: Jun 2008
Location: Simi Valley, CA (SoCal)
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Schematics call out G102 for the horn and EGR stating it is "BEHIND CENTER OF INSTRUMENT CLUSTER". This is a major grounding point, and if the tach connection and horn connection are affected, then almost everything in the car would be flakey. The tach signal comes from the EGR and is also connected to the 'Compressor/Kickdown Cutout Control Unit". If you don't find a bad ground you might check those or the Overvoltage Protection Relay which feeds power to the EGR.
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'84 300SD 119KMi (Liesl der Diesel)
'84 300D 326KMi when the oil left (former parts car)
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