If I was going to do this I think I would like the idea of mounting the outside HDTV on a swivel mount just inside the basement door area like shown here... You should get the same great viewing area...

Google image
The inside wall here is very strong to support your biggest HDTV set... However the size of the HDTV should not be bigger than the access door to basement area. My idea here would be to make this a permanent install for the HDTV and be able to swing the HDTV back inside the basement and the swivel mount action would allow you to move the HDTV against the inside basement wall out of the way of storage items. Swinging the HDTV back inside the basement area could be done very quickly if a storm comes up pretty quick... This is also a great way to quickly secure the HDTV set if you had to walk away from the trailer. Just swing it around and close and lock the basement door... I'm guessing one downside here would be the appearance of the basement swing up door above the HDTV when being viewed. You would also be looking at the mess inside the basement all of the time as well hehe...

Google image
This image shows the HDTV more out from the wall but you should be able to swivel up against the inside wall...
I have had to get behind my Fridge on many occasions to do things and i would not like the idea of the HDTV attached to the Fridge vent door. It would have to swivel away from the vent door to allow you to remove the HDTV for sure...
I do have a 5th wheel but when I purchased it I was intending to tow it with my F150 Truck and we all know how that turns out hehe... The last words I heard was "Sure - your F150 won't have any problems towing this baby" My 5th wheel now sets in a camping area at the edge of my woods just after a couple hundred miles of white knuckle driving up and down I81 hills. I made it to Roanoke VA and turned around and came back home hehe... NO way would I have survived the hills south of Roanoke on I81...
My OFF-ROAD POPUP however gets used everywhere and again I need to get to the controls mounted behind the fridge panel. It also produces alot of heat from the built-in heater used to flow the coolant through the fridge coils etc... My OFF-ROAD POPUP trailer fridge runs on Electric-Battery-Propane...
Just some of my personal thoughts here...
Roy Ken
