Went to replace my bulbs today on my 05 F-150. Did the drivers side but now there is no low beam at all. High beam works though... Any ideas? Havent done the otherside yet.

 

sounds like your bulb is faulty...

 

Had time to mess with it today. Bulbs are good. I guess I just got a little rough getting it out of the headlight lens. Socket or wires must be bad. Called the auto parts store, sd I had to get it from Ford. Did a online search for part number WPT-793 and saw the bad news

Off to the salvage yard I go.

 

WOW...never heard of that before, just fix it

 

Turns out it was just a fuse. I did consider that but thought well if it was a fuse then both lights would be out. Apparentely there are fuses for both sides of the lights. I would have never guessed it.