How do you replace bulb on side mirror for 2002 ford expedition?

To replace the bulb in the side mirror of a 2002 Ford Expedition, first, remove the mirror housing by gently prying it off or unscrewing it, depending on the design. Once the housing is off, locate the bulb socket, twist it counterclockwise to remove it, and then pull out the old bulb. Insert the new bulb into the socket, reattach it by twisting clockwise, and then snap or screw the mirror housing back into place. Always ensure the vehicle is turned off before starting the replacement.