Comes with everything you need to install, short of some double sided tape. I did cut and solder the connections when I installed them so your factory bulb connectors would have to be cut, but they can be cut in a manor to put them back. I know because I just did it to my car. I have used them for about 1 year. I paid 191 for them brand new. looking for 100 obo + shipping if needed. I can bring them to the ice races or to the cities the last weekend of the month. Let me know if you have any questions. Thanks Bill