I recall seeing circuit breakers or fuses that are attached
to the positive terminal of the battery...and to which all
wires to the Batt. are attached.  the idea obviously being
that the breaker or fuse will cut off power in the event of
a short anywhere in the system...at least one big enough to
cause a fire.  Has anyone ever tried one of these....any
reason not to?  Fire and a crazy driver are my main
vulnerabilities and it seems like a cheap bit of insurance.
steve