September 11, 2009I have a 97 1500 I am running 2 batteries to operate stereo, alarm and winch ext.. I purched a 140 amp alternator to help with the extra load. my existing alternator has a single brown wire that goes to the charge indicator. and the new alternator has 3 black wires coming from the plug.
my question is which of the three wires is for the charge indicator and what are the other 2 wires for??