These Raxiom Gen5 Tail Lights feature built-in sequentials, modern LED technology and aggressively smoked lenses to transform the appearance of your 2005-2009 Mustang. When activated the turn signals or hazard lights will sequence from the center light out and repeat until switched off. When the brakes are applied, the tail lights will sequence once and then stay lit during braking. Raxiom Gen5 LED Tail Lights are assembled from state of the art electronic components with a simple plug-in connector that easily inserts into the stock wiring harness for a straight forward installation. Replace those weak factory bulbs with numerous high intensity LED's that illuminate quicker and brighter than standard incandescent bulbs with a set of Raxiom Gen5 LED Tail Lights to improve your driving safety. Raxiom Gen5 LED Tail Lights not only improve the appearance of your Mustang, but they also meet or exceed the strict guidelines set forth by the U.S. Department of transportation (DOT) making them DOT compliant under compliance# QR1200176. This is a product designed for Mustangs sold in the US. It will not function properly on Mustangs sold in the EU or UK without modifications being made to the wiring harness. Also, these Tail Light are not compatible with Tail Light Trim.