Battery in Trunk Wiring That Exceeds NHRA Requirements

About your breaker...

CALL THE MANUFACTURER!!!!

Changing to the 6ga with some type of protection from cutoff to OEM starter relay is fine.

Home run on cable to physical starter, no breaks in the cable. Correct in your assumption only hot with key in start.
About my breaker... OKAY, I'LL CALL THE MANUFACTURER!! :poke: (Ha, I'll bet we'd be a blast as neighbors!) I thought maybe I was onto something regarding the Ohm's law thing.

Sounds like... I'm almost afraid to say... I might have it!!!

I'll post again with results. Thanks again. :thankyou::thumbsup: