NukeNeck has you covered on the water connection. No need to turn on the pump when connected to city water. Great looking camper. Ask all the questions you can here and enjoy the unit. There can be a lot of details, but it gets easier.
In regards to dewinterizing, I drain the lines, then fill the fresh water tanks, adding about half to 3/4 cup of bleach to the tank (the fresh water tank on mine is 42 gallons). I don't get picky about the beach, but a 1/4 cup for every 15 gallons is about right. I let it sit for a night or two, then run water through the faucets for a few minutes, so it removes any residual RV antifreeze. Then I drain the tanks and refill the fresh water tank, run water through the system again tonight flush it out. I may do this once more, but usually I just make sure the tank is drained.
Sent via mobile - Chris
2015 Jayco Jay Flight 26BH
2004 5.3L Trailblazer
Warrant Officer Corps