On our rig the wires were bundled and zip tied, ready to be connected to the batteries. Since we have a portable 120 watt solar panel (Go Power) we sometimes use the connection to add additional solar to the unit if we're camped in a shady location. I have a 30' extension cord for the portable panel that allows us to put the panel in a sunny spot. We also have 3 120 watt panels mounted on the roof connected to a 30 amp controller.
Doug & Wendy
2017 Ford F350 CrewCab SRW, 2018 RW 340RL, MorRyde IS, disk brakes, Goodyear G114, Demco 21K AutoSlide