When I first got these I didn’t think much about how well they would work or anything like that, but I bought them because I thought it would be a cool very simple upgrade to do. This product still surprises me to this day. This product not only is super super easy to install (unscrew the old ones then pry them out gently) (screw in the new ones then push them up into the area a bit but not too much) This product is SO BRIGHT that it creates a literal line of light on the ground slightly behind the vehicle. It is as bright as the rear taillights. Install was super simple, and the difference in brightness is incredible! If you install this product and one or both of the lights do not work, unscrew slightly, pull it down a bit/pry it to reposition it lower, and then turn on the lights, and they should work! If they still do not then keep trying until they work!