Evidence of some condensation in driver's side headlight

Hello, I'm Danny.

Considering the headlamps are a sealed unit I would suspect you have a crack in the plastic somewhere or the seam is leaking. After having condensation inside the unit for awhile I'm sure it is making the clear lens kind of hazy. It may also be creating an issue with corrosion on the bulb connection. If corrosion is present you might want to use a wire brush or sand paper to clean the connector terminals. There is no real easy way to separate the lens assembly to clean the inside haze so A replacement may be required. If you let me know what model FX you have I can send you headlamp removal instructions. Hope this helps and thanks for using 2CarPros.