janpaul
Well-known member
Our new 5er has a black water flush on the outside where you can connect a hose and flush out the tank. When I was winterizing, and checking out all the plumbing lines, I noticed that the line from it comes in beside the fresh water fill and then goes up the wall after coming inside and another line comes out the same hole and goes underneath. There is an enclosed underbelly, so I can't say for sure if it goes to the black tank, or if they are connected inside the wall, but I would almost assume so. Why would this go up the wall when it is to go down to the black tank?