Alternator Light on 93 164L

[GLewis4457@domain.elided]

Just started acting up on saturday. Started the car normally and the 
alternator idiot light lit up and stayed lit after the engine started and ran 
normally. After running a few minutes, 3 or 4, it went out. Then it would 
periodically come back on for a few seconds, and then go out again. Revving 
the engine does not seem to help. It has a new belt that was installed when 
having the valves done, just 1K miles ago. Otherwise the car runs normally. 
The voltmeter reads a normal and stable 14+V and there is no light 
fluctuations during night driving. Could this be just the internal voltage 
regulator (easy to fix) or should I just pop for a rebuild? Help and advice 
appreciated...Jerry in Houston

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