How do you change citroen C5 break 2001 stoplight?

To change the stoplight on a 2001 Citroën C5, start by opening the trunk and removing the interior trim panel on the side where the stoplight is located. Once exposed, unscrew the light assembly and disconnect the electrical connector. Replace the old bulb with a new one, reattach the assembly, and secure it with screws. Finally, test the stoplight to ensure it’s functioning properly before replacing the trim panel.