Originally Posted by haromaster87

I like your thinking! Excuse my lack of knowledge, but are diodes internal to the alternator? As in, if it was the diodes, it would require repair or replacement of the alternator?

Also, any word on if that regulator out of the stock Bosch alternator will fit? If so, like I said it's almost new and I can pull it off tonight. I don't think the regulator on the current alternator is actually Bosch branded, so I can't compare part #'s. However, if they are the same shape and size, would the AL129X use a different regulator since it's higher amperage, or would that not matter?