I bought a set of those for my new kitchen cabinets at home, but I couldn't get myself to drill through all my new cabinets.
I will say this, they are BRIGHT. Freakishly bright in my little kitchen. And, the transformer turns the 120VAC into 12VDC so you should be able to direct wire them to any DC switch in the trailer.
And, you can plug them all into one long strip and eliminate a lot of the wiring. I pulled my unused set off the top of my kitchen cabinets and we'll probably install them on top of some of the overhead cabinets in the trailer... maybe. I want to put them outside for use around the campfire, but i don't think they'll fair well in wet conditions. Although, the though had occured to me to slide the whole set of lights into some slightly larger clear tubing from Home Depot. Should be easy enough to seal both ends with some caulking and hang with some regular hose/pipe mounting clamps...
lol, just saw you posted a second link... I have the ones from the first link. They do like 5 different colors, and even rotate colors. I like the red. You know, for... mood lighting... er wait, um because the graphics on the trailer are red. Yeah, thats it.
2014 Silverado 2500 6.6L TD and 4X4
2011 Carson Standard Duty Car Hauler
2012 Forest River Stealth SK2112