Thanks for all of the helpful suggestions.  Problem solved. One of the
brushes on the alternator regulator was worn away.  I replaced the regulator
and it's back to normal.

Duane
Palo Alto, CA

>The battery and oxy warning lights lit up yesterday morning on my 83. >The
>lights stayed on for a while, then flickered, then went off for a >while.
>This repeated several times.  The battery is reading 13 >volts. Does anyone
>have a suggestion?  Could it be the regulator?
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