Originally Posted by italia490
Someone else can correct me if I am wrong but I believe the yellow film you are referring to goes on the outside of the lens. I don't think it's feasible to apply the film from the inside.
If you are looking for yellow light output you might try this instead:
Amazon.com: Nokya Hyper Yellow H16 9009 5202 Foglight Bulbs: Automotive
Before I attempt a fog light housing retrofit, I plan on trying a bulb style similar to the one in the link. I suspect it should offer a much better light output then the factory bulb and LED bulb.
Will those amazon ones work?