I installed one on my 30' Classic two years ago and I think it adds a whole element of safety to people behind me. I installed it just below the trunk opening. About 3/4 inch of space there and the digital light bar is around 1/2" wide. The length is perfect for that space. Installation took some real planning. To do this correctly, I ran wires from the 7 pin junction box in the very front of the trailer to the LED bar. It also required
12V. I took power from the light inside the trunk. Trust me. When you step on the brakes, you get an 8' display of bright red LED's!