Hey: On my headlights I used 1500grit wet/dry with warm water and ivory soap(to keep paper clean) also using a sponge like finger pad to keep it uniform. Taping off the fenders/cladding and opening the hood, (be sure to cover the engine compartment due to flying compound). Sanded the top part of the headlight with even strokes until all the scratches are gone,keeping fresh grit paper at the start then the more used towards the end. Then picked up some Blue Magic Plastic and Plexiglass Cleaner from my local Autozone. Along with my full size varible speed BD polisher I polished each headlight assy. 3 times each keeping the rpm's low and keep it moving and the compound coming ,checking between each one for inspection. All the scratches are totally gone and they both look great. I wish I had some before pic's but I will display some after pic's (My Gallery). Whole process took 30-40 mins. Have a nice day..