How do you replace middle high brake light on a 1999 Lexus gs300?

To replace the middle high brake light on a 1999 Lexus GS300, first, open the trunk and locate the plastic cover that conceals the brake light assembly. Carefully remove the cover by unscrewing or unclipping it. Then, disconnect the wiring harness from the old brake light, remove the old light bulb from its socket, and replace it with a new one. Finally, reconnect the wiring harness, reattach the cover, and test the light to ensure it works properly.