These look great on, however they do not come with installation instructions. I had the professionally installed using the 'wiring diagram" on this site, it was at least some kind of a road map for them. BUT it still cost $400+ since even after contacting Spyder directly myself I couldn't get instructions. I still haven't heard back from them. I called and emailed them. Be prepared you pay extra for the install if you don't DIY. Then be rady for if you for no help from Spyder!!!!!