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Old 09-17-2012, 10:28 AM   #1
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Electrical - Can someone save me some time?

I have a short somewhere. Defroster light lights up (sometimes) when I put the top down or roll the windows up or down. Also, when driving (sometimes, of course) after I shut the car off, the car locks. It's semi-obvious I have a bad ground somewhere. Before I start ripping trim pieces off and causing more problems than I started with I have some questions. (Driver side under the seat is and has been dry everytime I am looking for change)

1. Just in case there is an easy answer, is there somewhere specific I should look at that has been a common area for these type problems?

2. Where might I find an electrical diagram?

3. Any other helpful ideas would be appreciated.
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Old 09-18-2012, 04:56 PM   #2
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The Bentley manual has pretty good electrical diagrams. Circuit diagrams are a bit tedious to follow but these seem pretty complete. Fortunately I have not had to use mine for wiring, but it has been very helpful for other repair issues.

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Old 09-18-2012, 06:22 PM   #3
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Strange electrical problems are typically from a failed ignition switch. Its a cheap part, but a bit of a pain to replace.
Current car

2000 Boxster 2.7l red/black

Previous cars

1973 Opel Manta
1969(?) Fiat 850 Convertible
1979 Lancia Beta Coupe
1981 Alfa Romeo GTV 6
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1989 Porsche 944
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Old 09-19-2012, 11:21 PM   #4
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a capacitive discharge wouldn't hurt either...

2001 Porsche Boxster S
1988 Porsche 928 S4
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Old 09-21-2012, 04:46 AM   #5
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Now that sounds interesting to me. The ignition switch was replaced by the previous owner so I'm saving that as the last option. What is a capacitive discharge? It sounds more complicated than hanging a ground strip to drag the ground when I'm driving.
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