Update the exterior styling of your 2011-2016 F-250/F-350 Super Duty with a set of Axial Sequential Switchback LED Mirror Mounted Turn Signal Markers. These Turn Signal Marker Lights feature a sequential LED strip that replaces the unsightly hot spot of the factory lights. These Axial Sequential Switchback LED Mirror Mounted Turn Signal Markers not only look fantastic, but they are also much brighter and more noticeable than the weak stock incandescent lights for increased visibility day or night. Raxiom manufactures its Sequential Switchback LED Turn Signal Lights with injected molded ABS plastic housings for durability, and uses smoked polycarbonate lenses for aggressive good looks. These Turn Signal Lights employee high output, amber/white switchback LED lighting for super bright illumination. Raxiom ensures that its housings are weather sealed to prevent dirt and moisture from harming the state of the art electronics found inside. Raxiom designed its LED Turn Signal Lights to be a direct plug and play upgrade for your F-250/F-350's original mirror mounted marker lights. There is absolutely no cutting, splicing or resistors required. Just pop out the old factory marker lights and disconnect the wiring harness. Plug the harness into the back of your new LED Turn Signals and snap them in place of the old ones. It's that simple!