With the canopy on, it is impossible to see what is behind you, and the camper trailer can't be seen in the side mirrors (unless going around a bend).
The system was purchased from Safety Dave.
We mounted a camera on the rear of the canopy, and a monitor clipped to the existing rear view mirror. Cables were run down left habd pillar, then along door sills, into the cavity under the rear seat, then out through the floor in a gland. Into the canopy through another gland, through ducting and out a cable clam at the rear. The cable clam allows the camera to be removed without cutting the cable, and I prefer them to grommets for weatherproofing.