How to replace a fog light bulb of infinity 2000 qx4?

To replace the fog light bulb on a 2000 Infiniti QX4, start by turning off the vehicle and opening the hood. Locate the fog light assembly behind the bumper; you may need to remove the cover or access panel. Twist the bulb socket counterclockwise to remove it, then pull out the old bulb and insert the new one. Finally, reinsert the bulb socket, secure it by twisting it clockwise, and test the fog light to ensure it's working.