Hi I have an 94 GT with what I thought was bad alternator bought a used one from a friend. Had it checked along with one on the car when I bought it a few months ago. They both passed found out there was an harness unplugged plugged it back in thinking I had fixed my charging issue. Until today that is its back not charging right again. Only show around 12.3v running and 12.6 off as well as only being maybe quarter way on the battery gauge inside the car. But when I thought it was fixed by plugging the connector back together wen back up to 14.2v. But back down like it was originally don't know if its related or not but it barely wants to run and sputters and acts like its wanting to cut off. Which it wasn't doing when I thought my alternator was going out. Can anyone help me figure out where to start? Thanks in advance!