Here is what I would use. It’s a auto reset and can be found in Walmart sporting goods in the boating stuff. Or a auto parts store. Use a 6 inch piece of the same wire going to fuse block from breaker to positive post on battery.
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Charlie Weaver USN/ENC 1965-1979
I have a switch on my boat that cuts power to everything except motor and automatic bulge pump many circuit breakers have a switch on them as many electronics will still pull juice if shut down.