to those confused about my use of back-fill, sorry about that ... I'll try to explain, but I'll bet before I get the explanation out, I'm going to resort to Visio and drawing pictures...
On my Laredo, the fresh water winterizing kit is a T and a valve in the line between the fresh water tank and the pump.
In Normal mode, the pump draws water from the fresh water tank and distributes downstream to the water faucets.
In Winterizing mode, the pump draws from the hose attached to the T valve, whereas one can stick the hose in the antifreeze jug and once again, distribute downstream to the faucets.
My thought was to perhaps rig another T and valve that would loop back around from downstream of the pump either into the freshwater tank or cut into another T or maybe a 3 way valve on the winterizing valve, essentially using the pump to draw from the winterizing hose (stuck into a 5 gallon jug of fresh water in this case) and back-feeding into the fresh water tank.
Using Perry B's method above, I could hook a hose to my outdoor shower and stick the other end in my fresh water fill port, and pump from the jug to the tank. But, they're on opposite sides of the trailer, so would take a little running back and forth. But, it would work with no modifications except a hose to connect to the shower line.
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2010 Laredo 245RL
2007 Dodge Ram 2500 CTD 4x4
Andersen Ultimate Gooseneck mount
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