How do i change the left front turn signal bulb on my 99 f-250 super duty pick up?

YOU NEED TO REMOVE THE INSTRUMENT CLUSTER TO REPLACE ANY BULB WITHIN IT

Check the bulbs, one is burnt out.

Front CV joint noise.

my 2000 f250 did the same thing. i did what you did also. changed bulbs everything else, but had to bring it in to have the wireing harness changed and that seamed to do it. Check the connection (plug) that goes into the light. mine was over heating and causeing the bulb to burn.

could be a short,but more than likely the bulb receptical has a worn contact so the receptical needs replaced.

There are 2 screws on the bottom side of the turn part of your truck. The orange or clear on some models. In between the bumper and the lights you will find them. Remove the 2 screws then you need to pop the turn light out of the sockets in the header panel they fit into. Just apply even pressure to the outside by the fender with your fingers and wiggle until it pops loose and then do the same for the inner one. Once completely loose you can then turn the bulb socket which will pop out and you can see the bulb. Push in and turn the bulb counter clockwise until it releases and remove it. Replace it and reassemble in reverse!

There are two screws between the bottom of the lens and top of the bumper. Remove the screws and pull the lens out to the front. Change bulb and the reverse the order.

you replaced the bulb with the wrong one i.e. a two filament bulb with a one filament bulb

http://www.genuineservice.com/genuineservice/en/default?page=genuineService

Go to this website and pick owner guide in the left task bar.Then input your vehicle info and pick get owner guide.Then pick the owner guide and your bulb info will be on page 85.