To take my headlights apart, I pre-heated my oven at 400 for 10 minutes and then turned it off. After I turned it off I then stuck my headlight in for 5 minutes. After that pull it out and pry it open with a screw driver or butter knife. Once it's warm it will seperate pretty easy. Just remember to turn the oven off before you put your headlights in. Oh yeah take all metal clips and rubber off before heating them.