I installed the cs lower valance and a Roush grille on my 2012 gt. I also replaced the fog bulbs with Vleds h11 26 watt led bulbs. I noticed that my driver side hid headlight is flickering. When i turn off the fogs, the headlight still flickers. Anyone know anything about this issue?

 

Sounds like your bulb may not be plugged in all the way? I'd try to unplug/re-plug in and see what happens. Just be sure not to touch the glass of the bulb with your fingers. If that don't work take it in and have Ford diagnose . . . maybe the ballast is bad?