Lazy Daze Class C winterizing

Do have your owners manual? They mention draining the water system, but also talk about removing fittings and such. There is a low level drain under the water tank with the valve in the outside storage compartment. Drain the water tank through the exterior access panel as well. The water heater bypass should be under the sink. I know, taking the electrical panel out to work on the water system is a pain, but once you get it out, there's actually a fair amount of room to work under there. Still can't get my water level sensors to work after having it taken apart a couple of times.