Does the galley overhead flourescent light?
Two thoughts? Since the big galley light is easy to find, I would look at why it it not lighting first and then look for the small lights. If neither work and you can find them, I would look for something they have in common and in this case the ground wire (JF) is used by both circuits, so it might be suspect.
And there is always a chance it is something common like the tube needs to be wiggled a bit in the big light and maybe the bulb out in the small one???
Take an open mind at times!
Would this be the small courtesy light?
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!