What is the headlight bulb size for the 2006 ford f150?

The headlight bulb size for the 2006 Ford F-150 is H13. The light bulbs will stop working eventually. If it becomes dull, You will have to replace them. They aren't that expensive, so they won't hurt Your bank account. Being able to see at night is important for driving down the road. Your lights need to be working or You may get into a wreck. Some issues will show up at some point. A failed relay equals a failed light source. Corrosion is very bad to deal with. A faulty wire may come about. Lights might burn out prematurely. Blown fuse can come about. These issues need to be dealt with quickly.