What's the 2006 Ford f150 third brake light bulb size?

The 2006 Ford F-150 truck is going to use a different light bulb size for the third brake light than it does for the normal ones. The third brake light is going to need to use a 921 bulb. These bulbs are a very common size so they shouldn't be too difficult to find. A single bulb is going to range in price from between $10 to $20 but I would suggest going with one of the more expensive ones since they are going to last longer. If You need to take this in to a shop to have them do the replacement it shouldn't cost more than $120 to $140.