I have a 90 Cresta, stock motor with intake and exhaust, the p.o. had an issue with the car eating alternators, he took the car to a mutual friend who did some shit and installed a fuse, this stopped it from eating alternators, something to do with an exciter wire. P.O. installed powered by max multi gauge that shows Volts, oil temp and pressure, works great, I buy car knowing that car has a parasitic drag on battery, havent had much down time, I just pull negative lead when the car is going to sit overnight and put it back on when i leave for work. Here recently, the car has been acting like a dick head, I get in the car, fire it up, says its charging at 11.1v, run the car for about 5 minutes, then it shoots up to 14.5v and charges at that for awhile and then settles into 13.5v after a little bit of driving. This morning however, it didnt do that, it was charging at 11.1v then progressively got worse until it was "charging" sub 9v with the car slowly dying (not charging). I didnt have time to fuck with it, left in the driveway and grabbed ol reliable (03 RX8 with factory engine and 115,xxx miles) and I drove to work. I don't know shit about the charging circuit on this car so I figured I would ask here, it makes sense, I like being told I'm fucking stupid for not check blah. Any ideas? Also, when looking for parasitic drag, I used my multimeter on amps between neg lead and battery neg, I pulled fuse installed by P.O. to protect charging circuit and it was a substantial drop in battery draw, that would mean that somehow the charging circuit was drawing power when car is in key off position.