On one of my bike projects I retro-fitted a PDM (power delivery module) and when it has a short circuit, there's a little bit of wizardry that cuts power to that circuit before it damages anything. You fix the fault and the pdm see's the fix and restores power. That's the ultimate unless the pdm goes wrong of course, at that point I'd be on the phone to my mrs to bring the van. It has some other nice features for a bike, like programmable circuits to cut during cranking events, remote button panels with a single wire connection (a module multiplexes the buttons down at the panel end). But on a big machine where your not stuck for space to hide things, just more to go wrong.
