jhawkwest -- The inverter on the 2015 31UL only powers the dinette TV and the outlets on the side of the passenger seat. If yours in a 2016, I'd think it's the same but maybe they made some changes. A quick call to Jayco CS should answer your question if not here.
2015 Jayco Precept 31UL
Tow: 2014 Ford Fusion SE HYBRID
Blue Ox BX7420 Avail Towbar
SMI Duo "Stay in Play" Braking
Barley, our Golden Retriever, on board and Buster in spirit!