Alternator?

kickywow said
all im saying is my 71 volt regulator did not work in my 78, and i bought it last year and have not driven the 1971 car...

I can assure you it is NOT the difference in 71-78 regulators

Either the 71 is bad

or the connector is intermittent/ dirty

or maybe you didn't get it grounded good.

I was around before these girls were born.