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roadster49 roadster49 is offline
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Join Date: Apr 2010
Location: Troy, MI USA
Posts: 156
Garage
I am having a similar issue on my 911sc/1983. The battery light never came on. One day with the cold snap there was not enough power to start. Recharged the battery to 12.4 and started the car. Was only getting 11.4 with engine running. Took alternator to a rebuilder who said it was fine but was not getting exciter. While I had the alternator out I touched the blue wire to the chassis and the light went on. Installed a new Valero alternator and the light is on continuously, regardless of engine revs. I have checked the grounds and they seem fine. The po installed an alarm system that I disconnected because the fuel pump was not getting power. I think somewhere between the disconnected alarm and the blue light is the problem but struggling to find..
Old 12-12-2017, 08:51 PM
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