[Patrick L.]

Where you want to install the switch is a good place, easy to get to. Make sure the wires are heavy enough, no lighter than #1. It doesn't bother me which line the switch is in.

But, my main question is;;; why not find and fix the draw ?!
1. That off a battery lead
2. connect a test light or voltmeter between the lead end and battery terminal.
3. If there is a draw it will show on the meter or light the light
4. keep disconnecting things until the light goes out or the meter reads 0. Thats your draw. Fix it. [ Its probably the stop lights, dash light, or generator cut-out]