1978 chevy pick up 350 v8 alternator voltage?

Rhonda

New member
at first battery volts on dashboard gauge was at 13 volts. then one day it started to drop slowly 11, 12 10. It would click up & down with the same sequence as my signals. brakes , signals , liights would move it up& down. So alternator was changed , battery was charged and now it is overcharging when I step on the gas petal with speed it goes 14,15 volts at idle it stays at 13 volts.
 
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