Curious to know what you will do to a water pump to winterize it once you find it.
The 2022 has a hose, located at the pump, that pumps the antifreeze through the lines. It has a valve that, when turned, pulls the anti freeze from the jug.
I have the same trailer. I’m sure you already figured it out but for anyone else looking, it’s located under the linen cupboard in the bathroom. Just have to remove the panels on the bottom to access.