[Keith True]

All the equipment I've worked on with factory battery switches have the switch in the ground side.I watched a small John Deere dozer burn up from a cutoff switch in the hot side.The switch itself got hot,failed,melted,dropped down onto the steel gas line,the hot terminal fried through the line,and the fire was on.It was gravity fed by the 5/16 gas line.If the switch is in the cold,or ground side,if it is off nothing can happen as the electrons can't get back to ground.If a switch fails in the ground side,it can short to the machine all it wants to.In the hot side the cable between the terminal and the switch is a very likely place to have a problem.I saw one on an A that was mounted on the firewall have a problem.The cable had chafed through on the edge of the firewall I was looking the car over and happened to spot it,there were some burn marks where the inside of the cable had just started to arc.