no, heavier wire wouldn't help, just take longer to destroy more things if you get a dead short someplace .... wire it right and go with factory, your meltdown wasn't because of the design of the system, nor is it likely to re-occur unless you do something wrong - was it your replacement gauge? something routed wrong and touching something? improper connections? fuseing the main supply will just leave you in the dark at the side of the road someday, everything should have it's own protection
Bill
