Originally posted by brianl703:
If I had to take a guess I'd say that one of the alternator diodes has gone bad. That usually causes diminished alternator output, with the possible side-effect of causing a battery drain when the engine is off.
That would be a typical failure.
If you can, check for voltage drop between the alt. output and the positive battery post with the lights on. A drop over a quarter volt indicates bad connections.
"Those who cannot remember the past are condemned to repeat it" -George Santayana
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