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DeadPorsche944 DeadPorsche944 is offline
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Join Date: Sep 2016
Location: Dawsonville, GA
Posts: 119
I have a 1983 Porsche with the same issue. I thought the alternator was not working. Replaced it, and still no charge. Then I used my Powerprobe to quickly put 12V at the exciter wire. I think it is light blue with a black stripe or something. Its hard to tell from the picture. The alternator immediately started charging...

Where does this wire go after it leaves the alternator? I've tracked it back to right before the firewall, but the PO had it hooked (with a solder joint) to a solid blue wire that goes into a two pin connector. Since this does not look to me to be factory, tracing this down will probably be a waste of time.

I was thinking of hooking 12V through a diode to the alternator, but then how would it know to stop charging?
Old 12-08-2017, 07:56 PM
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