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Quick thought: before I crimp my harness to the 6 upfitter wires in the engine compartment, should I splice each passthrough wire into the corresponding upfitter wire as well? Essentially making all the pass-through wires also live when the switch is activated? Would be much easier to do that now rather than later if I install an accessory inside the cab and need to connect to a passthrough wire in the kick panel. Would there be any downsides to this? Of course, I have to ensure I don't plug two different things into the same Aux swith (one in the cab and one in the engine compartment) but that's easy.