I mounted my LED's under the awning tube, on the side of the trailer. My awning is 20' long, LED strip comes 16', I bought another section, tied it into the first, so my lights are the length of the awning. I've got a 2013, Rockwood Sig. Ultra Light, 8315BSS. Ran the 12volt power cord up and into the refrigerator vent, then down inside the wall, tied it into the 12 volt behind the refrigerator. Also mounted my remote there. I can control the lights by holding the remote next to the refrigerator access panel. Works great.
Would send a picture, but can't figure how to insert it.