Yes, dome light is the thing 
I needed to check where that were located. Now i know Thank you for the help. I can fly this complex thing in the sim but have not learned where all the lights are located LOL.
Well, here is the dome light switch if there is more than me that didn’t knew about that
Well, that light left to the seat that we can turn around is cool that they simulate. Would be cool if we could remove it like it can be done in the real aircraft and then be used like the flashlight. Would feel more realistic than pressing ALT+L
When we are talking about lights. Can we adjust lights in the cabin too?