What is the BROWN Alternator Wire for?

[Richard2112]

Originally Posted by Gregski

Wow I started this thread five years ago! So what year is your truck and what alternator do you have cause as Greg64 pointed out in post #7 above the Delco 10SI and 12SI already have them built in.

Ive upgraded my alternator to a 105 amp and it works fine. I just never saw internal regulators listed or sold in auto parts. If/when mine eventually fails, I'd be interested in just installing a new regulator.