That tied up wire and fuse looks to be the same as when we received our 2017 CY from the factory. It was for the external solar panels plug. Follow the wire to see if you can ascertain such. It was heavy gauge wires, so made sense to carry a heavy 12V load.
Our Furrion camera wiring was all wired up to hot 12V. I installed the camera and found the fuse holder (no fuse from factory). Installed a fuse and the camera worked as expected.
Wasn't happy with the camera being on 24/7, so rewired it to my tail lights so to work only when towing.