That's what fuses are for. They blow, or trip depending on which style you use, if there is a short, from a possible wreck, or whatever, or there is overloading, meaning the current draw in the circuit is more than the fuse is rated for.
The beauty of putting the master cutoff in the negative side of the battery is that it can't fail from overloading, and when you turn it to off, there are no grounding points on the vehicle. No grounds equals no power. Anywhere.
If a vehicle is wired without fuses, it is a problem waiting to happen. I don't care if its a racecar with 3 circuits in the entire vehicle. Always use fuses.
|