Port Snowman said:
Just to add- You could easly short out something if the clamp/wire got away from cold fingers and touched metal...
It would only be clamped on one end and on the battery side. So if it jumped off there would be no power to go anywhere. The other end is just going to have a lead to touch to turn the starter.
I don't think the switch is a bad idea and I'm sorry if I sounded like I was knocking it. I'm just saying it has to be done right so that the wires don't rub or it doesn't come loose. I'd hate to see someone short out there battery.