This morning I completed a mod to my 2014 Crusader 330MKS to allow me to move a TV from a bedroom wall mount to an outdoor mount under my awning.
I bought a Master Mount 403 with an extra wall mount bracket for $70 on eBay.
In the bedroom, I installed the bracket directly behind the front vertical channel that attaches the awning to the exterior wall. At this location, there is aluminum reinforcement inside the wall to which I secured the bracket with four 1-1/2" #12 sheet metal screws. The arms of the mount provide plenty of room to swing the TV out of the way to provide access to the bedroom closet.
I installed the exterior mounting bracket near the TV connection (RH basement storage bay) at a height that put it directly behind the master bedroom dresser. There is space behind the dresser drawers sufficient to install a 1x4 backer board tight to the wall that I could lag into with 3" SS #12 screws. Brackets seem very secure and more than sufficient to support my 32" LED TV that weighs 18 lbs. For travel, I'll remove from bracket and store on bed.
2014 Crusader 330MKS Touring Edition
2006 Chevy 2500HD, Duramax/Allison
Firestone Ride-Rite air springs