Re: Draining battery problems! (TexasCorradoG60)
Texas, I had a similar problem and found a similar solution.
My battery started dying, seemingly at random, about twice a week. I figured there was some sort of short somewhere, causing a drain. First I thought it was only happening when it rained, but that wasn't it. Then I thought maybe it had to do with my power locks, windows, seatbelts, trunk light, etc. I checked all the usual suspects for a battery drain and found nothing.
Then I measured the voltage at the alternator, thinking maybe my battery just wasnt getting charged fully when I drove. My alternator was putting out 13.9 volts though. Then I got an idea - I measured the voltage at the battery with the car running. With a battery fresh off the overnight charger, it was only reading 12.75 or so volts. That was my problem - the alternator was providing the car with juice to run, but was not recharging the battery.
I replaced the cables from the battery to the starter, starter to the alternator, and battery to ground. All with 2awg cables. Now, I read 13.9v at the alternator, and 13.85v at the battery with the car on.
Moral of the story - anyone with a dead battery problem shouldn't overlook the battery/alternator/starter cables. Mine looked fine to the naked eye (no evidence of damage or corrosion) but were causing my battery to die.