I am posting this here because nothing else makes sense

A tip I heard about when working on the electrical and you need power. First, disconnect the battery and hook up a low amperage battery charger. You'll still have power and can tell about a short, but you won't have all the amps.

This is a fantastic idea. My charger puts out 40 amps (not adjustable) But I have a cheap one that might work.

I use a battery tender for this.