need a little help here guys! My alternator is not charging. just put an engine in the car, ive checked the 4 grounds that i know of which are fine just replaced alternator, still no change. i did pull the connector off the back of the alt and checked voltage with key on and with engine running and got no voltage, im assuming this is the problem area. what else do i need to check or test to figure this out, car runs great just no charge could this be a pcm problem? thanks in advance any input is appreciated!!!