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?