Thank you for the reply- I ended up calling Jayco_ turns out it was a 30/40 amp 5 pin fuse that is used for the battery cut off .....back on the road .....I’ll try and post a picture.
I have a 2019 Precept 31UL and having the same issue. Sounds like a solenoid or relay clicking near the house batteries. Only hear it at night due to the quietness, about once an hour. Any thoughts? Thanks. Dan