There are many light bulbs in the interior of your car. The courtesy and dome lights turn on when you open your door. The glove box light turns on when you open your glovebox and the trunk light turns on when you pop the trunk. Most of these interior light bulbs can be accessed by finding the pry point on the plastic cover and popping it off. A set of plastic panel pullers is helpful when prying off the trim pieces.
Hans Angermeier has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road.