spray paint and or oxidation and how to remove it?

[godfearingman]

Hi I bought an 94 Mustang GT about 3-4 months ago I'm fixing up and I noticed that there was yellow spots showing through the trim on the tail lights. I don't know if it's black spray paint or oxidation or combination of the two or what. I can sand it and it'll go down to yellow don't even know if the tail light were painted body color or black but I'm wanting to clean them up as much as I can. I've tried Meguiars PlastX polish/cleaner without much success of getting the black down to yellow but can remove some of the grayness. What else can I use besides sandpaper and Meguiars PlastX polish/cleaner to clean them up?

http://i67.photobucket.com/albums/h301/nicholasleeharper/20150803_134945_zpsnlfoouz4.jpg (http://s67.photobucket.com/user/nicholasleeharper/media/20150803_134945_zpsnlfoouz4.jpg.html)

http://i67.photobucket.com/albums/h301/nicholasleeharper/20150803_134953_zpsdumuv17u.jpg (http://s67.photobucket.com/user/nicholasleeharper/media/20150803_134953_zpsdumuv17u.jpg.html)

[bugman53]

Looks to me like someone spray painted the lights. The chances of sanding the black off and still have the yellow in good shape is very slim. You are going to haft to repaint the black/yellow part. I would first wetsand and polish the lens part and restore that first. Then i would tape that part up and wetsand with 400 grit to get a nice clean surface and repaint the black. I think even spray bomb would look better than what you go going on. If you have a trim gun get the factory color mixed up and go to town with base clear.