How do you replace fog lights on a Nissan Altima?

If you are referring to the bulbs, the only method I have found that is easy is to remove the whole front bumper by removing the 6-8 push pins on top, 5 push pins and 6 screws on bottom, and the screw behind the wheel well on each side. Once the bumper is off, just twist the sockets out of the housings and pull the old bulb out and put the new bulb in. Reinstall everything in reverse order.

Be gentle removing/reinstalling the bumper. It slides into place in a certain way.