Whoa, first things first, that battery is on borrowed time. Replace it before you do anything else. You mentioned in your first post that the voltage dropped to around 3 or 4 volts. Load testing the battery, it should not drop below 10 volts or so. A battery at 12 volts is 50% discharged, each of the six cells has a capacity of 2.1 volts giving you 12.6 volts for a battery in good condition. I have a brand new alternator and new voltage regulator(external) and it maintains about 13.75 volts at all times, no load, lights on, blower on, stereo blaring so save yourself another tow call and replace it!!!!
