The wire is probably there, just inside behind the center light; you may have to fish around to find it. If not installed than you will need to remove the center light and fish the wire to the bracket. Now, that camera will only work when the vehicle running lights are on. I wanted to use ours as a "rearview" mirror so rewired it all the way to the tongue, wired it to the distribution box on the tongue and installed a small switch to turn it on. Now I can see what is behind me while driving or backing up.
Open Road Pathfinder
2020 Kodiak Ulta Lite 201QB
2021 Ford F150 Twin Turbo V6
Logging the miles in the USA. Adventure awaits around every corner.