I have poured through the threads on this site and the video online dealing with battery cut-off or kill switches. Not anti-start switches but something that will quickly disconnect the battery from the trucks circuit.
I am planning this for two reasons: To keep the old wiring from draining my battery and to keep someone from stealing the truck - since it does not lock!
My question is this almost all of the threads and videos show the switch being placed off the positive post of the battery prior to the positive cable going to any other component. Why isn't the ground cables used for that instead.
It seems it would be just as effective, just as easy and possibly safer than messing with the positive line.
What am I missing?