Remove ,and thoroughly clean/degrease tail lights. Use brown scotchbrite pad ,and water to remove oxidisation from lenses use only enough muscle to do the job. Dry ,and check your work, go at it again if need be.Wipe down completely dry lenses with alcohol ,and a clean cloth.Apply three wet even coats of clear with at least a 10 min. wait between coats (check weather condition reccomendations on can) Let dry ,and reinstall.This is what i used-this is the result--