These lights are totally awesome once installed inside your vehicle. They come with instructions for syncing them with music and all. I installed them in my vehicle and they neat, love them. These are nice little gadgets for the guys. They have a simple USB plug to plug them in, making them a breeze to install and hook up. I do recommend ordering multiple sets and you'll also need a USB Hub for installing multiple sets but these are a great idea and bargain for the money. Makes an excellent gift for men of all ages.