I've got a 2016 Jayco Seismic Wave 310w and in the garage area there is a sticker that shows where to put the tv mount (a stick with arrows point to each corner of the sticker) but I've put a couple of screws through the wall that didn't tighten like it grabbed something, so I'm not sure where the extra support is to run the screws/small lag bolts. I'm just going to put an oversized piece of 3/4" plywood up with glue and screws, then paint it to match the wall and mount the tv mount to it. That way I know the tv mount is going to stay hanging.