5-Ton battery relocate and secret battery shut off

[MyothersanM1]

I have the same switch installed on my truck. It works flawlessly. The locking feature in the on or either off position (clockwise or counter-clockwise off center) is positive and solid. No chance of it moving. I wired mine between negative battery terminal and frame ground. When in the off position the truck is completely dead. I have been considering putting in a secondary. It is also hidden under lock and key.