I've always heard if your alternator was case grounded that you should not paint it for it can't produce the current well. Is this true, and more importantly is this true for our cars, I have painted my engine all black, so I would like it the same color. I know I could polish it up real fast, but it wouldn't match the black very well.

 

mine was painted before i got it to black, really wish they didnt do it because i like silver....but it works fine =)....its commin out for a higher amp one in a few weeks though

 

it works fine...i've seen chromed ones too...whoever told ya that they wouldnt work was just bs-ing ya. make sure you dont get pain on the inside, but the outside is fine.