first, it's exactly same as clearing the headlight
here's the link to clearin the headlight
second, when the headlight is disassembled, you wanna sand (400 sand paper) the dark grey paint and chrome on the housin. (I "recommend sanding it but it's such a PITA!!! you don't have to tho)
third, use wet paper towel or cloth to wipe off the paint dust on the housing.. and dry it with dry cloth
fourth, TAPE IT!! tape the chrome circular thing that makes our projector look pimp. also tape the reflector. if you don't tape the reflector, your turn signal won't be bright at all and cops don't like that. (see the pic, you wanna tape those 2 things..once you are done with tapin them, they should be all covered with tape)
fifth, use primer paint! i got this spray primer paint can from schuck's. i used flat black. if you want glossy look, go with semi-flat or gloss. I sprayed 2 layers. once it's all dry, spray it one more layer!
sixth, when its all dry, take the tape off and you put the whole headlights back together
sorry for the bad "how to"
it's 2 in the mourning and i'm hella tired