I have a 1990 gsx. I have a new battery, a new alternator, and the alternator is not charging the battery. I took it to autozone. they put it on thier little machine, and they told me that the charge at idle was not enough to keep the battery charged. at 2000 rpm, it read 12.1 volts. Not doing so good. I need to know how to re-wire the whole thing. Anybody got some useful information? Please Help.

 

your alternator is doggy or was not connected propply

 

get a new alternator

 

aftermarket alternator