I think this will function but if it doesn’t I’m intending to rewire the hot ground in to the switch on the dash and coming out with the swap into the gasoline pump and go that route if desired   I was searching for some thing very similar the opposite https://usedcontainerchassisforsa44320.thenerdsblog.com/42389662/the-smart-trick-of-40ft-reefer-container-for-sale-that-nobody-is-discussing