I put a new large LED TV in my overheard on an articulating arm. The arm was designed for RV's so you push it back and it locks into place. I can pull it out and move the TV over to the side for better viewing from the couch. I was anticipating some kind of a system of bungee cords that I would have to put on it to keep it from bouncing around and making noise on the road. But I installed it just on the arm and took it for a ride and the TV is just so light that it doesn't bounce at all or make any noise. I made a box out of 3/4" plywood and bolted it into the steel box that held the previous TV, and then attached the articulating arm mount to that. Works just fine.