charging issues

switching my voltage regulator was directly responsible for the 1v drop at the battery. its an older mopar electronic and i thought it was still good. heres the deal : my original VR shows 13.8v across the bat and .24v across the blue wire alt field and the +bat. the new one shows 14.5 at the bat and .38 from the field to the bat. weird huh? maybe i should get another VR? any thoughts ? since i have been running it, which hasnt been very long , the voltage in the battery has been climbing.it was 12.05 this morning and right now it is at 12.39. i hope that is a good thing.