The cables are routed through vent for the refrigerator like a lot of other posted here. Unfortunately the fridge is about 2/3 of the way back on the trailer, but is the cleanest way to run wire (I gave this a lot of thought, and couldn't figure out a better way). I then wired under the bench for the kitchen table, back under the frame, and up into the cabinet behind the battery.
I didn't really take any pictures of that part of the install. The wire is 10awg solar wire, so was easy to work with. The long run was partially why I chose to run the panels in series vs the more popular parallel.