The kit has plugs on the end of the wires that allow you to connect the two lights together and then ultimately the on/off/dimmer switch. If you want to use one light bar in one shack and one in another you would have to cut one of the plugs off and then install either alligator clips or those metal ends to connect to a battery. Obviously you wouldn’t have the dimmer feature on that one, but it should work.
It would be nice if you could just buy the switch complete with the plug, then you wouldn’t have to cut any wires.
It is a VERY nice setup, very happy with the ease of use and install. Hopefully they standup, but they do seem high quality.