Here's a couple of photos from my previous camper and my current camper.
The first photo, I to removed the in-take line and attach the line for the "pink" stuff. The blue clip pulls allowing the "plug" on the line to attach and seal. It was simple to just switch the lines back and forth.
Here's a photo of my current camper. I attached the winterization hose kit myself. It has a simple valve that will select water to pump form the holding tank, or switch it to pump from the clear hose (pink stuff).
Hope this helps: