If you go to winnebagoind.com, they have complete plumbing and electrical diagrams available. Try this link: https://winnebagoind.com/diagram/Plumbing.htm and choose the appropriate year/model. If you still can't find what you're looking forward, send them an email and they will send you more detailed pics. I did this for our 2017 Aspect and they responded within a day. Good luck!
2017 Aspect 30J
Traveling with Beans our 10# Chi-Weanie!
I called the dealership. This answered my other question that the owners manual did not address..where the diverter valve and suction tube for winterizing is..behind a panel inside an outside storage bay😊