[danielsatur]

Some Control Modules are connected to the battery, instead of going through the ignition switch.
If there's a short, it will drain battery over night.
Need to disconnect pos side of battery, and hook a volt meter.
1) Is there any amps being used with the ignition key off?
2) If yes, need to isolate fuse's one at a time until no amps being used.

Start with the batt fuses!