I needed a home switch for my RV batteries. Most of my RV plugs are powered by an engine battery. After a few hikes my motor battery died so this was the solution. I connected my home batteries to extra USB outlets and fused 12V outlets. Now I can turn on my outlets without turning on the engine or house switch. This was drilled into the stage case where the batteries will be placed. I bought a drill for $20 but it was worth it.
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