Hope that helps, dr c.
Gary, I found one that is a big toggle switch. I had to go to an RV store to find it. Requires no mounting to the car. Mounts to the battery. Cost was about $20.00. Email me if you cant find one and I can give you the stores #. The hardest part of locating one was most cut off are for top post batteries. This was the only side post cut off I could find. Bruce Battles Vin #0656