Originally Posted by Doyle1973
I donít think there is an antifreeze inlet on the outside , just the city water one .
The typical solution for winterizing is that, on the input line to the water pump is a selector valve that selects between two inputs for the water pump:
--A line coming from the fresh water tank
--a 2-3 foot piece of flexible tubing.
This valve may be recognized by the fact that it has THREE ports, input from fresh water tank, input from flexible tubing, and output to fresh water pump.
Sometimes the flexible tubing is detached, laying nearby, and the third port is closed with a screw-on cap.
Have you found the water pump yet? Post a picture of the plumbing near it.