This is a pair of Cadillac CTS Fiber Optic LED Tail Lights Red Smoke housing. This pair of LED tail lights are the latest style with LED lights so when you brake, the LED tail lights will light up and give your Cadillac an outstanding style. These LED tail lights will fit ONLY 2003-2007 Cadillac CTS. All the wiring are pre-assembled so you do not need to do any wiring modification at all. The LED tail lights are with OEM standard quality and are designed for stock lights direct replacement. Installation is easy, direct bolt on with no modification needed.