Originally Posted by 95Pop210
when connected to hose water overflows out of fill port
Are you just trying to fill the tank, or are you wanting to connect to city water & leave it connected? If the former, then it's normal for water to come out of the fill port when the tank is full. If you want to stay connected to city water, then you need to close the valves next to the city water connection so it won't fill the fresh water tank or hot water heater.
From the '95 Roadtrek owner's manual (page 9):
"To connect the water system to an outside source:
iii) Close the front tap at the city water connection to prevent the fresh water tank from being filled.
iv) If you vehicle is equipped with an optional water heater, close the rear tap at the city water connection to prevent water from exiting from the hot water drain system."