Spree Connect Tankage diagram - water fill

That’s a typical RV setup where the fresh water tank doesn’t have a “connection” per se. It will have a cap you unscrew and just shove your hose in. Once filled it will overflow out where the hose is in.
The city water connection you actually screw the hose on, turn on the water and that’s it. No pump used. The first time you add water or hookup to water open a hot water tap to allow hot water tank to fill easier and air in it escapes. You never know if it will air lock on you.