where is the voltage regulator located on 1997 gmc yukon

on 1997 GMC Yukon

my lights go dim and then they get bright and go dim again

2 answers 1 comment
inside the alternator. have it checked to confirm.

it is on the back side of alt
be carefuul. do not recomend you do not touch this. I would replace the entire alternator rather than just the regulator.