Not sure if this will help much. Photo from my 2011. Mine is in at a local repair place for a SealTech leak test. Won't have it back until later next week, so can't get anything new. Looking through the photobucket, this may help a little bit. Light over the dinette, showing position relative to overhead shelf and speaker:
ETA: If you click on the photo, it will take you to my photobucket bin for camping photos, scroll through and see if there is anything else there that will help; mostly photos of interior and exterior mods and hacks.