I have a 2500, 2001 4wd. It has two batteries. They keep draining. I bought a kill switch, but don't really see where or how to install it. Not having luck with youtubes so far.

Any insight or links?

TIA

(sorry. It should be "help" in the thread title, not 'elp')

 

You would need two of them and interrupt both ground wires.
Since the batteries are connected across the radiator and there are some wires and fusible links molded into the drivers side battery connector any other way would be quite a remodeling of the wiring.

 

Thanks. I guessed that might be the case. Appreciate your input.