If you're using them for tail lights replacements These lights look good when you get em but in the tail light housing the leds aren't pointing in the right direction to reflect the light. They are in a cylinder shape and nothing facing the reflector so looking through the lens you see a star pattern. I'm talking dim areas and bright areas not uniform like an incandecent bulb. I wouldn't recommend these or any other led bulb that is a cylinder shape. They just don't measure up to incandescent lumens and project weird patterns when looking in the tail light lens.