Anyone can think of any ideas why the fog lights quit working suddenly?

I checked the 20 amp fuse on the fuse box (#20 if I recall on the fuse info on the box) under the hood and it is good. Then replace the light switch assembly for the fog lights. Still no power. Both fog lights, the bulbs tested good. Hate chasing for the elusive bad wire somewhere.

 

i assume you have already checked for 12v at plugs for the bulbs(i had both fog light bulbs on my challenger go out inside of the same week). assuming there is no voltage then i think theres a relay for the fog lights in the PDC that would be my next check based on what you have already done.

 

Could not believe it. The brand new replacement headlight switch was defective out the gate. Returned it back to Napa. Ordered another one from amazon for less than half the price and fog lights are working now!