when testing with the replacement of a single bulb is obvious !!! it is much more white. so look in that security. after the change of the two bulbs, one gets used and found ca less obvious but of course the result is there, the lines of signs or the signs are much more visible. this is not good as an optical xenon either, the powerful névolue not enough so the little scope but clearer, better seen details of the road .. I ordered some for all my vehicles. I recommend!
