92 pontiac transport.Battery replaced 4 times but still keeps draining over 1 to 2 days. Alt. tested as good. While driving of l turn on A/C, charging sometimes drops to about 10 to 11.Wires going to ABS pole under hood show 2 as neutral and 2 as being grounded, and of course the one from the bat. Any ideas? Should any of the wires there show up as grounded. And why does the new bat drain over a night or two?Thanks for the help.

make sure you have a good connection for your battery and make sure there are no lights on inside and out and if not try messing around with the fuses to see if any are burnt out or try pulling some them for a bit

Sounds like ur battery is not receiving a charge at all. If it dies in 1 to 2 days, that is about how long it would take to drain a battery that is not being charged. l would check all the connections on ur battery & on ur alternator to make sure they r tight & do not have any build-up that would prevent ur battery from charging. Also, make sure the serpentine belt is tight on the alternator. One time l replaced an alternator on my car, but did not tighten the serpentine belt correctly & had the same problem happen.

check the button for the under the hood light (if it has one) that what caused it on mine

a charging diagnostic check is needed to observe your entire charging system 2 see were the missing link is..could be something as big as your alternator is just starting 2 go to a little wire at a junction block, but look you've had 2 buy 2 batteries already..

check for battery draw if you want to no how cotact me