Did you look in your Ford Owners Manual?I have a 2024 Thor Vegas 24.1
The passenger tail light will light for headlights and reverse lights but will not light for blinker nor brake light.
I cant find in the manual where the fuse is for this
I have not tried thatWhen you swapped in the drivers side bulb
What happened?
I can’t find a fuse for the tail lightsDid you look in your Ford Owners Manual?
Page 152?
But since there is no fuse for a single brake light or single turn signal; that is likely not the source of your issue.