I've got a question. I have a 2003 Viking 1906 PUP. I'm not having any problems with it, but today I was doing some routine maintainence on the inside. I noticed that my shore (City) water input line is not connercterd to anything. There is a port on the outside of the camper with a tube running inside and under my cabinet near the fresh water tank. But it is not connected to anything. It is manually plugged so no water would come out if I did connect it. I have never used City water, so I never noticed it before. What is it supposed to be connected to?