I recently had my timing belt and water pump replaced in my 93 940 turbo (probably unrelated but...) 24 hours later, my battery was "dead as a turd" as my mechanic put it. Nver happened before...but he says unrelated. Since I was already there, we ran tests and when the field connector was pulled from the back of the alternator, the draw on the battery went away. I drove the car home, pulled the alternator and brought it to a respectable re-build shop, who refused to rebuild it as he claimed the unit was in perfect working condition and there was no draw. So I have been pulling the negative terminal on the battery for 2 weeks, getting an arc when I plug it back in every morning. If the regulator is not bad and the alternator is functioning, where do I go from here? The ground wire from the alternator appears to be fine...and if I unplug the field connector from the back of the alternator over night, the battery is fine the next day...battery test came back fine as well. Any suggestions? Thanks in advance!

93 940
90 240
89 240
87 240