1. Open the trunk of the car.
2. Locate the two plastic covers on the inside of the trunk lid, near the top of the rear window.
3. Use a screwdriver or other thin tool to pry open the covers.
4. Remove the two screws located behind the covers.
5. Carefully lift the third brake light assembly out of the trunk lid.
6. Replace the bulb if necessary, then re-install the third brake light assembly in reverse order.