I NEED TO REPLACE BULD IN PARKING LIGHT IN MIRROR ON MY 2008 F350, DOES THE LENS JUST POP OUT????

 

adjust the top (large) mirror so that it is turning in towards the truck as far as it will go. Then look behind the mirror in the bottom righthand corner (outside bottom corner) and you will see a silver metal clip. Take a straight head screw driver and push on that clip and the lens will pop out. Then you simply unscrew the bulb holder from the lens and replace your bulb.