|Last summer (2018) I bought a used 2016 NV200 and did this conversion. I have vented windows in both sliding doors. I started with a battery isolator to charge the auxiliary battery and later added a 100W solar panel. It has a small fridge, an inverter, a roof vent fan, and 12V lights. I have a sink with a pump faucet and 1.25 gallon fresh and gray water bottles. (I started with larger bottles, but found I needed storage space for food and camping stuff more, so reconfigured the cabinet's interior!) The couch expands to make a 31" wide by 72" long bed. More storage and the auxiliary battery and electrical panel are under the bed.