Electrical mistery!!

[AWDTALON3000]

I just got a new battery and got my alternator rebuilt, but my battery light still comes on faintly past 3000rpm. All the connections look good too.

What could cause this??

thanks

 

[crankbender]

I just got a new battery and got my alternator rebuilt, but my battery light still comes on faintly past 3000rpm. All the connections look good too.

What could cause this??

thanks

Bad brushes in the alternator...as it spins faster you loose connection.