I do not have an answer for you but I'd bet someone here has experience with your model trailer and knows the location of the fresh water tank. It may take a while for them to find your thread, hang in here.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"