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Alternator warning light question
Alternator at shop, was being re-built. Shop now testing unit post re-build, say can't get warning light to function. It is otherwise functioning. Any thoughts?
Jason
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'79 911SC Targa Last edited by LIRS6; 07-31-2020 at 12:21 PM.. |
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07-31-2020, 11:59 AM
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ROW '78 911 Targa
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New external VR installed?
Or is it a newer alternator with internal VR? If internal, they need to install a 5 watt 91 ohm resistor across the blue and red/black wires at the lamp socket on the gauge. As per the Technical Service bulletin about upgrading the alternator to internal VR type.. Like this one I made for my car. (Poor photo) 
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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07-31-2020, 03:08 PM
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Quote:
FYI alt failed when bearings went, per diff thread. Thanks Jason |
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08-01-2020, 10:59 AM
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ROW '78 911 Targa
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Ok, possibly the remote VR was cooked with a big Voltage spike when Alternator failed.
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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08-01-2020, 11:11 AM
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1979 Porsche 911SC Targa
Heinz
