Review on Jtron Battery Disconnect Switch For Trucks, Boats, RVs, And Off-Road Vehicles - Max. 32V DC And 100A Continuous, 150A Intermittent - ON-OFF/100A Battery Switches For Marine Use by Ryan Selpasoria

This is great! I run one wire up from the battery to this switch, then to a power distribution block where I have my fuel pump, electric fan and other accessories that I can easily turn on and off. A good safety/security feature too. I am worried if I lose the "key" I won''t be able to start the car, but it''s not that bad. I can just connect the wires. I know the switch isn''t expensive, but it would be nice to buy just the "key" separately for $5 or something. I know my luck, I will lose it and I''ll have to order another one.