After 3 days of sitting my 88 was dead. I did a few tests ( alternator, and voltage draw test) and both were good. The battery is appx 6 months old. Autozone guy said something about a voltage regulator might now charge the battery when the car is on. But even after running for a few second and then shut off. The battery is dead after 5 mins. So it would be the battery? Little help?