Well, no responses yet; deserves a response......even if I am not familiar with Mercedes based RV's. I am assuming a Sprinter based chassis probably? There may be a fuse allocation supplement document on the attached Sprinter link that matches, or is similar to your coach fusing......not sure if every year has a new fuse chart or if they are similar through most build years. Hope it helps get you get started at least. Failing that, back to the Dealer or perhaps another poster will confirm what you need.
https://www.mbvans.com/sprinter/owne.../owner-manuals