Step by step instructions for winterizing

[TLG]

We have a 2007 Mountaineer 329RLT. The owners manual is very vauge about the winterizing procedure. It states to pour antifreeze in the fresh water tank and pump it through the system. It does not address the low point drains, outside shower, or black tank flush. I know these have to be drain and winterized. This is my third RV, but first 5th wheel. I have always done my own winterazation, but I'm afraid I'll miss something. I can't believe this unit does not have the bypass at the water pump to pull the anti freeze through the system. I'll probably go ahead and install one of them, but the pump is located in the rear cabinet of the L shaped kitchen. Tuff spot to get to. Anyone with a similar unit have time to list the step by step procedure for winterizing this unit. Will be returning home to West Virginia this weekend and would like to get it done. Thanks in advance. Tom