[swedishsteel]

I have a '36 tudor humpy. I glued a plastic battery box to the floor in the trunk and bought the biggest tractor 6 volt battery that would fit in it. Used welding cable for cables and used battery connectors that have the wing nut. In the fall I just unscrew the wing nut on the ground side and disconnect the cable. In the spring I put a charger or maintainer on the battery when I think about it and with a little drink of gas down the carb, she fires right up. Only takes a couple minutes to open the trunk lid and do the work. I don't have a shut off, but would probably mount one close to the battery in the trunk some where. I have them on a couple other machines and agree that you should get a quality one as the cheap ones lose amps across the connection.