Have wired system here. I purchased monitor, cameras and cable from ebay sellers.
The monitor clips on the rear view mirror. Looking at the monitor is no different than looking at the mirror. I wired the truck with cable end, coiled up by the tailgate. When I hitch up, I pull out enough cable to reach a camera, that I set on the bumper. I can watch the monitor and back the hitch right to the coupler. The need to jockey the truck around, is rare.
I wired the trailer with enough cable to reach into the bed of the truck. After hitching up, I unplug the bumper camera and plug in the trailer. The trailer camera is mounted high up (just below center running light) and angled downward, to reduce glare. Going down the road, checking my rear view, is pretty much the same as if the trailer wasn't there.
On a previous trailer, I had mounted the camera down low, and pointed straight back. Driving west, early in the day, or driving east, late in the day, the camera was useless, all I could see on the monitor, was sun glare.
Here are links to materials similar to what I used.
MonitorCameraCableThere are several options, as to how you power the system. Some folks wire them to back up lights (thats only good for reverse), some folks wire them into the vehicle's running lights, and some folks use alternate sources. I made a power plug, that plugs into a 12 volt outlet, in the truck cab.
18 Nissan Titan XD
12 Flagstaff 831FKBSS
Wife and I
Retired Navy Master Chief (retired since 1995)