dead battery

[widespy]

my battery keep getting discharged i try the battery in my other car and is fine i try the alternator and is charging i diconect the alarm stereo system still same problem if the car sits for 2 or more days i'm a truck driver and i'm away for a week or two at the time and every time i try to start the car is dead starting to get annoying any ideea where to check
btw i diconect the positive i conect a test light on it and touch the positive on the battery with the tip of the test light and it lit so pwer is draining i pulled all the fuses one by one no luck any ideeas?

 

[DakotaPSI]

It sounds like you are arching out somewhere in the positive battery cable before it gets to the fuses.

 

[Old Mitsu Tech]

Pull the wires off of your alternator. You might have a diode that has shorted. This will drain a battery pronto.

And, usually it will still charge as there's more than one diode.

Good Luck