Location of Alde expansion tank on 2021 T@B 320 CS-S

There have been several plumbing diagrams posted here for the TaB.  Issue seems to be, nüCamp would make minor changes during a given build year, so a definitive diagram is not really possible for every model.  But they are generally all very similar, and easy to sort out.  That said, many parts of the plumbing is not easy to access, and the bits that need regular service are easy to get to and find, like the water pump and filter, but this location changes from model to model and year built.
cheers