Bright lights shining into your rear view mirror is not only annoying, it is very stressful. A Honda Prelude dimming rearview mirror eliminates the glare. So, no more squinting and straining, just a nice relaxing drive. And, our Prelude dimming rear view mirror installs quickly and easily! All of the necessary hardware is included, so all you need to install your Prelude auto dim rear view mirror is an Allen key.