No factory sticker for mounting a TV to the exterior wall in my 2011 cougar 325srx. Personally I would not risk drilling into any exterior wall no good can come from it. If keystone puts a sticker now they must have plywood or something to that effect to mount on the exterior wall on new units. If they charged for an option to have a bedroom TV or TV mount most people would take them upon it. Same thing in my last unit, wall plate electricity and no mount. Silly.
I bought something like this. It's a front projector ceiling mount. It fits right above the sliding door and the wall plate. There is a wood trust to screw into. The other two bolts I got a scrap piece of plywood up there took the fan shroud down.
I'll take a picture later for you, but ceiling mounted you then angle the pipe to you liking toward the bed. As everything is Allen key adjustable you can achieve almost any angle. The mounting plate is adjustable to mount on any TV. If you look close there is another pivot point at the plate to achieve angle adjustment for the TV. The pipe included with mine was quite long, I cut it to my liking. Once installed it is solid, there is no movement or need to secure when driving.
I put a 15" TV I had already, but it could hold up to a 32" which might be overkill for the space. Room for the door to slide, room to walk by, and closer to the bed. It's also adjustable viewing angle with all the pivot points. Power cord and coax cord can be fed thru the pipe and up to the wall plate. I will likely move the 20" TV to the bedroom from the Garage, move the main TV to the garage which i think is a 32" and get a 40" at some point for the main room.