I have a 94 300zx and im on my second battery now and second alternator. For some reason if i leave the car sitting for about 2 days i will go to start it and the battery will be completely drained. Battery terminals and wires are good, I believe the alternator to be good(still have to test it which will be done today). Could it be ground connections? I will also perform a parasitic draw test which had been done w/ the last alternator and battery and it did show some draw but not enough to worry about. Im just kind of stumped and wanted to see if anyone else had experienced this and if so what the solution was. I dont want to go buy a new alternator if i dont have to. Also i do have access to wiring diagrams if anyone has any suggestions on possible circuits to test.