I have the 313 so everything may not be the same. However, I didn't "mount" the receiver, I put it in the cabinet where the cable outlets are. I use an RF to infrared device that allows me to use the remote anywhere in the camper, so I can leave the door to the cabinet closed. It's not a pretty set-up as the reciever doesn't really fit in the cabinet, so it sits in there diagonally, but with the door closed, you can't see it. I ran an HDMI cable through the small hole in the cabinet, down to the small hole behind the TV. You have to take the drawer over the fireplace out to get at the cables. It took me a while to get them through the rats nest of wires back there but it can be done. Also, if necessary the TV can be removed by pulling straight up. Mine was very difficult because I believe they tightened the mount a bit too tight.