Hello,
I have Code 3 MX7000 lightbar that is used and to clean and restored the domes on this lightbar I used Mother's Powerball which is a foam ball that goes on a drill with Meguiar's PlastX. The effects are amazing and it restores your domes original clarity and color and removes haze and all the junk that builds up over years of being on a police cruiser. Give it a try.