Alternator Full fielding..??

I don't know why you are measuring voltage? I don't know what 'close' means. It sounds like you're swapping regulators? That's a method of troubleshooting but not the one I was suggesting.
10-4 I understand, only reason I swapped regulators was to see if any one would show a major difference to the others. The reason for voltage checks was to see if there were any drops big enough to create a charge voltage that high. When I say close 12.8 compared to 12.7 or 12.6 on the other components. Still not sure why there would be ANY voltage at the green wire..