Winterizing. Just looking for some clarifications...

Check out this video I did on winterizing my truck camper, which is pretty much the same as any trailer. Just also make sure you do your bathtub if u have one. I show how you use the "winterizing kit" equipped in many rv's which is the little hose by the water pump you talk about. Just also make sure you do your bathtub if u have one. Might get some pointers, i also show how to dewinterize and sanitize your water tank & lines in this video but you can omit that part if you don't want to do that.