I replaced mine with an aftermarket camera with a monitor that replaces the Ford truck chassis rear view mirror. The monitor has a provision to reverse the image so that it looks like it would with a real mirror. The original truck chassis mirror is useless because there is no rear window for it to see out of. I bought the camera and monitor at Camping World and had them install it in my 2013 Jayco Greyhawk 31DS is in its storage lot right now.
The camera is acturally made by RVS Systems. You can see the technical details here:
RVS-770619-NM | Backup Camera System One (1) Camera Setup with 7" Replacement Mirror Display | RVS Systems
You can use the existing back up camera cable if you buy a connection adapter. I was in a hurry and did not have time to wait for an adaptor. So I paid extra to have a new cable run to the back of the motorhome.
I am very satisfied with the result. The camera is almost too wide angle in its view. Makes cars look like they are much further away than they really are. But you get used to it after while. I pull a Honda Accord on a tow dolly. The camera gives me peace of mind that I can see the Honda readily.
The camera is not so good at night. I often just turn it off if I am tooling down an interstate highway. I don't like to drive after dark if I don't have to. Even then, I stick to interstate highways where there are few surprises.