Attached is a photo of a junction box in the cabin. These are the wire that come from the tow vehicle via the 7 pin connector. The wires on the bottom come from the TV. The wires on the top travel up through the ceiling in the cabin and will supply the connections to the travel lights (tail lights, marker lights, 3rd brake light, license plate light). The white wire on the right in the photo is the ground wire. When this white wire exits through the ceiling my intent was to run various branches off this ground wire to the various lighting fixtures providing them with the ground. My question is ... is this an "okay" practice, to use this one ground wire, tap into it where necessary to split off to the various lighting fixtures? Or is it better to run individual ground wires from each fixture and run those ground wires back to the junction box. A lot more wiring and work, but if that is a preferred way to do it, I'll do it. I just don't have a feel for this sort of thing.
thank you for the help.
John