Mad Dog,
If you have a circuit breaker installed and you had a short that caused a fire then
REPLACE THAT DEFECTIVE CIRCUIT BREAKER !
There are such things as self-reseting cicuit breakers.
YOU DO NOT WANT A SELF RESETING CICUIT BREAKER THEY WILL JUST RE-START THE FIRE !!
P.S. The breaker should be as close as possible to the battery in order to provide the maximum amount of protection. Personally, I like fuses. They are cheap, work well and small enough to carry a couple of spares.
How long was the original wire run ? What guage are you planning on using for replacement ? If the wire size was too small you may never have pulled enough current to trip the breaker