I installed two backup cameras on the rear and back corner (blind side) of the fiver which are hardwired through a separate 6-pin plug. I have a switch on the dash so that I can display any of three cameras (one on the back of the truck, and the two on the trailer) at any time, not just when in reverse. That way I can keep track of who's tailgating my trailer when on the road. The whole project cost about $150 with parts from Amazon.
We were short of counter space in the trailer, so I built a cabinet that uses the sink covers as counter top. The cabinet slides into a track that attaches it to the end of the counter by the sink to make an "L" shaped counter, or it can be used as a small island. I used the cabinet doors from the area under the TV where I installed a fireplace the previous year so the rolling cabinet matches the rest of the kitchen, as does the counter top.
I also ran dedicated circuits for the fireplace, and for an Edenpure electric heater we like to use on colder days. Our breaker panel had two "unused" circuits, one for the forward A/C unit, which we don't have, and one for the washer/dryer hookup, which we also don't have. I just used each of those circuits for the fireplace and heater. That way, no blown breakers when I use the coffee maker, the toaster oven, and the fireplace all at the same time.
2005 Cardinal Platinum 35 CKT
1999 Dodge Ram 3500 CTD Dually Crewcab with Lots of Mods.