this is a pic of our mount but its in our 16.49. brought the bracket from page bros jayco. mounted a etched and painted white alum plate to the wall with sicaflex and four screws with white caps. then screwed the bracket on through the plate into the wall, put sica on the screws as well. the plate is right next the window because i was told there was support around the window edge in the wall.
mounting here gave me the option to watch it from the dinette or to swing in behind the curtain for mummy and daddy.
at some stage i will bend up a plate the same as the V end bit on the bracket and mount it external for annexe viewing.