New NIGHTFX(TM) Guide Lights are the latest innovation from Lund! Featuring plug n' play functionality, installation is simple: attach the lights anywhere on your truck, plug into the OBD port and watch them light up the night when you open any door of your vehicle or use your key fob. The lights will remain on for 30 seconds and fade off. Sold as a set of four and backed by a 3-Year Limited Warranty.