If you have a ceiling fan that blows in as well as out, shut everything in the camper and turn the fan on high blowing in. Then take a spray water bottle with a mixture of water and dish detergent and spray it in the area that is leaking and see if it blows bubbles.
No guarantee, but it works sometimes.
Steve and Andra
2012 F350 6.2 gasser SRW LB
Fab Fours front and rear in case we run into a rhino
2019 Northstar Laredo SC