Every manufacturer tests their products. It's part of the process. Is there a need; how can we best fill the need; how bright a light; what color of light; what shape pattern is needed; which housing is best suited for the application?.
Great look great fitment. Make sure to buy a torch lighter to heat up your factory torx bolts on your hinges. They have lock tite from the factory. I was able to reuse my factory bolts. Yes they were long enough. I used blue lock tite afterwards.