And just thinking manuals are not always clear? I like pictures!
Winnebago gives us a great tools for "looking through walls" and finding parts here:
You can sort to your year, make, model and sometimes even need the serial number but once you get there, you can get a really good look at where and what you have as well as the part numbers if you need to dig further.
Click a part on the drawing and it ID's on the list or click the name and it shows yellow on the drawing! Cross symbol at lower left will let you click thecross, thenan item on the drawing and it will stay centered as you zoom or tilt the RV to get a better look. Takes some playing to learn the controls but lots easier than crawling around the RV!
I did a couple snips of the fresh water system on your RV, one for overall location and one close up to point to two valves you need as well as a warning on a filter which might/might nothold water if it is turned to hang down and it doesn't drain the water but holds it to break??? I turn my filter so it is bottom up to drain better, so I don't have to remember to remove it to dump!