What's the 2006 Ford f350 headlight bulb size?

The 2006 Ford F-350 has a H13 size bulb in the headlights. This is a very common bulb size and most auto parts stores around the country should have them in stock. When Your headlights are not working the first thing that I recommend checking is the fuse that goes to them. If the fuse is in tact then You will want to check the wiring at the housing to make sure that it is tight and free from any debris. If the wiring is all okay then it is likely a bulb problem. To replace the bulb You will need to remove the harness from the back of the housing that holds the bulb. Next You can remove the bulb from that wiring, install a new bulb on the wires, then put it back in the housing.