How do you replace the brake light bulb on a 99 passat?

my son's friend broke my taillight with a Lacrosse ball which caused me to get a used taillight assembly and learn the answer to your question. 99 passat. if it's the driver's side, open the trunk and remove the cover to the CD changer/storage area by twisting the two thumbscrews. this will expose a white plastic insert. press two plastic tabs toward the center and the entire assembly, that holds 4 bulbs (only 3 populated), lifts out easily. to replace a bulb press down and turn (bayonet base). similar concept for passenger side. just lift away the black covering to expose the white plastic assembly.