MW22r, the drawing for your coach shows the Winnebago part number as 180731-09-000 and Riverparks CVS125-01. Riverparks does not show that part. The drawing I posted is what's in my coach Winnebago 180731-05-000 Riverparks CVS300-01.
All of the Riverparks video switches look about the same and the pin function is shown by the connector on the unit.
I must be missing something also, it's was hard to use the GPS because it would switch to the camera when the turn signal was on.
Here is the link to your drawing:
https://www.winnebagoind.com/diagram/2018/000038142.pdf