[DG624]

I had a problem with the window switch sticking...but even with no accessories on it still is a problem.

I read this and it sounds possible.
The alternator can sometimes have a shorted diode that can cause amps to flow through the alternator's power cable and through the shorted diode and into the case and through the bolts and back to the negative battery terminal. This will drain a battery in a hurry.Make sure to read the ammeter before and after unplugging your Alternator.

I made a mistake when replacing the battery and maybe it did damage the alternator.