what would an ideal rebuild of alternator entail? they repainted it, which was nice, but i dont think it fixed it.

must add one qualifier though, the driver side door was mashed in by a little old lassie with lots of insurance while it was parked on the street. it will cost $2000 to fix, but as its insurance, i dont care...however, theyve ordered the part etc and im driving it mashed while waiting so i wonder if theres a short in the door thats causing the problem?