Battery draining

This means you have a drain on the battery. So something is remaining on that is causing the battery to be drained when the vehicle is not running.

https://www.2carpros.com/articles/car-battery-dead-overnight

We need to hook a meter up in line of the negative battery cable to monitor the draw. You do this by unhooking the negative cable and hooking one meter lead to the cable and the other to the negative battery post. This way all amperage is running through the meter.

When you set your meter to amps on a properly operating vehicle is should be lower then 35 milliamps.

Let me know if this makes sense.

Once you get a draw reading you wait for about 30 minutes for the vehicle to shut off all its system that should be asleep. Then start pulling fuses to find out when the draw goes away.