jerry, You've made some good points regarding my test light test, however, any draw that is able to illuminate a test light to the point where it is clearly visible in daylight is far too much. The test light is an easily visible instrument that can be remotely positioned while pulling fuses from the block. Heck, I have even used a buzzer in situations when I couldn't see a test light. I have yet to fail with this method. My opinion about ammeters is, they are good when dealing with individual circuits and for people that understand them. The general public would have no use for such sophistication. The test light is easier to use since it's either "on" or "off". There's no confusion. Granted, test lights should never be used when diagnosing electronics since the amp draw of the light has the potential of damaging components.

The likely hood of having 2 "bad" batteries in a row is possible but rare. I'm placing my bet on the alternator.