Battery drain

Hi Jeepers,

You need to perform what is called an ignition off draw (IOD) test or parasitic draw test.

Here is a video that shows how to do this very well. Just a helpful tip, when you remove the negative cable use a pair of vice grips around the negative battery post and then clip or secure your meter lead to the vice grips. They sell tools for this but vice grips work just as well. He uses a couple of different types of clamps so whatever works easiest for you.

https://youtu.be/zdIKNnwEjIs

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

Unfortunately, there isn't one thing that causes this. This test is the only and best way to figure out what your issue is. Once you find the circuit, I can help get you wiring diagram if you don't have it.

Please let me know what you find.