Battery

OOh, this one can be tricky... Remove the light bulb, unless it all interior (door,courtesy etc) lights. Then you can start huntin'... Look at the dome light type,...and what type of manual control it has, (slide switch, swivel, etc.) Make sure switch is not defective, corroded, etc. Then one looks to all items that activate all interior, if it were the case. (door switch, security system, alarm NClosed switches, door pull courtesy lights, etc). I think to drain the batt, it may be more than the dome, but its very possible. If you get "the fix in"...charge the batt slow over time to try and fully recover...although batts don't like being completely dead. Proceed~!