Battery is not charging. I believe the alt is not putting out voltage. Alt was rebuilt at a local shop and tests good on the bench. Alt has 2 spade terminals. Green field wire to one and keyed 12 volt power to the other. Each wire ohmed at .1. I have battery voltage to the VR at the IGN terminal. I have the same voltage at the alternator spade connector. Do I need to use a ground wire on the alt? How do you rule out VR or alt? Additionally, when the car was running I put my meter on the spade terminal with the 12 volt power; there were a few sparks when my hand slipped, nothing major. Could this have shorted the alt or vr somehow??