Originally Posted by MyPart

I've used this stuff along with a buffer to remove the yellow discoloration/fogging on my Mustang headlights. Works great but the yellow haze returns. I don't think that is the products fault but the type of plastic that was used. I expect that you're experience will be better since it's on the inside of the vehicle and shouldn't get as much direct light (I'm thinking it's the UV light that causes the problem).

Good to know that I already have the solution if my FEH clock cover does the same as yours.