Open the rear door (trunk) and twist the retaining screws off the plastic cover panel. Remove the cover panel from the trunk wall.
Squeeze the sides of the locking tabs securing the tail light fixture in place on the frame. Pull the brake light fixture from the trunk wall, leaving the wires connected to the fixture.
Remove the light bulb that needs to be replaced by pulling it from the fixture. Insert the replacement bulb into the fixture and reattach the fixture to the trunk wall. Push the fixture until it locks into place.
Replace the plastic cover panel to the trunk wall. Replace the retaining screw to the cover panel and tighten the screw. Close the rear door of the 2002 Cinco.