Do you mean like sharpie markings? If so, isopropyl alcohol will remove those.
As for installing lighting in your headlight, check out this video from LED Concepts. It will show you the basics of what needs to be done. I'm almost finished installing my own LED halo's and DRL's so if you have any questions let me know!
2013 Sterling Grey V6 Premium - Ordered: 9/18/2012 Built: 10/09/2012 Arrived: 10/25/2012 Picked up: 10/27/2012
6MT | Pony Pkg | Comfort Pkg | Magnaflow Street Catback | DG Custom Auto Painted Louvers | WeatherTech Floor Liners | Jaeger Brothers Front Splash Guards