Loosen the lens retaining screws with a cross-tip screwdriver.

Remove the bulb from the socket by pressing it in and rotating it until the tabs on the bulb align with the slots in the socket. Pull the bulb out of the socket.

Insert a new bulb by inserting it into the socket and rotating it until it locks into place.

Install a new bulb.

Reinstall the lens securely with the lens retaining screws.