Alternator problem

[wdrthird]

The single wire alternator on my '71 didnt seem to be charging like it should so I tested it and found it was only putting out 11.5 volts. I had it rebuilt and the guy said it had a bad rectifier. I put it back on, drove the truck once then tested it, again it was only putting out 11.5 volts. Took it back to the guy who rebuilt it and he said it had the same problem again. He told me that usually when it burns up diodes like that it means theres a short somewhere. So I unhooked the positive battery cable and attached one lead of my digital multimeter to it and the other to the positive post of my battery and it showed there was a draw with the truck turned off and all the accessories off. I had the wife watch the meter to tell me when it went to zero while I went to start pulling fuses to find which circuit was creating the draw. When I opened the driver side door, the meter went to zero, so Im guessing the door jamb switch was shorting out against the door and when I opened the door it broke the connection and killed the draw on the battery. I opened and closed the door a bunch of times but the meter would never show a draw again after that first time. Would something like that kill my alternator or do I need to keep looking?