HID stands for High Intensity Discharge they come in many different colors 5000K and 6000K are the popular ones. the 8000K and up you could get in trouble from local law enforcement. I have seen people around here getting busted with them
I have the Silverstar ultras they are great I would suggest doing the fog light mod so when you have your high beams on your fog lights will stay on also.
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http://www.fordrangerforum.com/exter...light-mod.html