Fresh water tank

I use the onboard pump to draw the water in thru the city water inlet, no extra pump, wiring or switch. I simply removed the check valve from the city water port and added a inline check valve inside. Then I put a tee between the city water port and the check valve then connected the winterizing hose to it. I wheel the water container to the RV and connect a short hose to the city water inlet and the portable container. Turning the valves in various ways puts water in the tank or allows use directly from the container. Just a few dollars for a check valve, tee, hose clamps and a short hose and none of the messing around with an extra pump.