Snowman, I had to replace both vertical end caps on mine when I bought it because the prior owner had jackknifed his trailer into BOTH SIDES! It's pretty straightforward and merely involves removing all the phillips-head screws along both edges. The side screws are behind the white vinyl strip that peels out of the aluminum track (easily put back in). I didn't remove the top piece that overlays both sides (didn't want to break the roof seal), so I had to carefully pry it out from under the top cap where it overlaps about an inch or so. I believe the rear bumper overlaps the sides on your model, so you may have to remove either the top cap or the bumper cover to get the sides off.
I had wired a rear view camera above the rear door and ran the wire behind the top cap (fished it to the left side) and through the rear wall behind the angled board where the roof/wall meet in the bathroom. It then runs the whole length of the coach behind that angled board inside the cabinets.
