This is the best yellow tint on ebay, this is what i used
http://www.ebay.com.au/itm/12-x12-Yello ... 878&_uhb=1some other sellers have really shit tint, they go cloudy after a while and aren't packaged properly so the glue crinkles up on the underside of the tint and it pretty much ruins it.
This stuff is without a doubt the best quality, and easy to work with.
-Just make sure the fog light is well cleaned,
-cut a generous guess of the size of your fog light,
-spray a fine even mist of clean water on the fog light,
-peel off the protective film on the glue side,
-carefully place the tint over your light making sure the tint comes into contact with the centre of the light first,
-then work the tint in a circular motion frome the centre out, make sure you dont let any air bubbles in.
-to get the film to stick around the outside of the fog light you will need to give it some heat to make the tint more flexible, (heat gun, if u don't have one, hair drier is fine have it on the hottest and slowest speed, or a blow torch from a very far distance which is what i used cause i'm inpatient.)
-after the tint has been fully applied cut around the fog light with a Stanley knife,(a narrow one is easier to use) just make use you don't scratch anything underneath where your cutting.