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Many thanks for the diagrams and instructions in plain English for us schematic/electrically challenged people. I need time to think this through but we're going on vacation and I won't get to it for a while. Besides, if I'm looking at this correctly I need to diagnose this when the problem is actually occurring. Otherwise everything will test OK. Correct?
I plan on using my Power Probe to simplify testing. The ground of the Power Probe will connect directly to the battery negative. That way I can just test for voltage, with the key on, at the proper points to see if it's flowing per the diagrams. IE- power to the switch itself and when toggled up/down per the instructions.
Since this is a common problem should I just cut my time and replace both passenger door switches for about $100. I assume the non-Porsche/OEM switches for $17 are not worth it. Probably China or other cheapo quality?
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1989 Carrera Coupe
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