OK, you have a couple of things here. I am not aware of any OEM backup cameras in 2013, I have a 2012 and it was not an option. Someone had that installed for the owner then. It sounds like they connected the camera power to to running lights and you must have those lights on. That is the easiest way to install a camera; that is what I did, since the running lights are right above the camera location. There is no easy access, which a short run of cable to "always on" 12v
. Some people have drilled a hole in the trailer exterior and fished a wire into the trailer to access 12v
As for the camera replacement, I have also had to do that. The camera typically has just two wires for 12v
+ and -. I installed mine with a plug for easy removal, but you need to look at your and see if they hardwired the leads or provided a plug to just unplug. No matter what, replacement is not difficult, but since yours apparently dates to 2013, you need to be sure your replacement camera is compatible with your display. An option is to just install a new system since the optics are much better in 2020 than they were in 2013.