| Re: [GMCnet] Alternator Warning Light [message #89615] |
Wed, 23 June 2010 10:42 |
KB
Messages: 1262
Registered: September 2009
Karma: 0
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Senior Member |
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Ken H wrote:
>
> Since that bulb compares the voltage at the fuse to that at terminal 1 of
> the alternator (the brown wire in the plug), I'd next check that voltage
> with the ignition switch in Aux and Ign.
>
> The 1.5 VDC at the fuse with Ign off is curious. I'd put a load (test
> light) on there and check the voltage to determine whether it's a high
> impedance load causing the voltage to appear.
Just as a follow up: the majority of the trouble appears to have been the connector at the alternator.
It was pretty damaged by a PO. We've replaced the connector, and now have the GEN light properly on
when the key is "on". Still have a glow in the "accessory" position to sort out, but at least it's progress.
Now I get to figure out why none of the dash lights on the fuel gauge work even though the other instrument lights are fine...
Ah, the joys of old mangled wiring!
thanks,
Karen
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Karen
1975 26'
San Jose, CA
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