Having chased a similar leak coming from behind the cabinet over the driver side window and falling on the trans shift touch pad, I feel your pain. Solved mine, but could not tell you which area solved it.
Agree with the folks pointing you to front running lights and front cap to body joint. I resealed all those, plus the sat ant hold downs, sat ant roof penetration, radio ant penetration.
Fair Winds and Following Seas
Terry & Rosalina
2007 Winnebago Journey 34SE
Retired Navy Mustang & Navy Wife