Stock Sucks: No doubt the S550 Mustang is a capable car, and if you've already upped the ante by making more power, new wheels, and fatter tires, then it's time to ditch the stock lighting setup too. Morimoto's unbeatable XB LED fog lights have been top sellers in our catalog forever, and we couldn't be more excited to see the lineup expand with offerings such as the new high-performance sequential front turn signals. Compatible: With all S550 Mustangs from 2015-2017, these complete front signal assemblies will swap directly in place of the original Mustang housings, use all of the stock mounting points, and should only take around 30-60 minutes to install. Plug n Play: Wiring is easy too! Though they're LED, these are designed to work without any special wiring. They will plug into the factory connectors for the stock lights and each assembly includes all necessary connectors, rubber seals, and pigtails for a plug n play install. No additional resistors, modules, etc needed! Style: Their geometry flows perfectly with the lines of the front bumper just like the original unit - but that's where the similarities stop. The smoked lens is slightly more aggressive, the amber LED powered optics are far brighter, and the sequential functionality looks sick. Bang for the buck, these are such an awesome way to modernize the lighting setup on your 'Stang. Well-Built: Their durable polycarbonate lens will resist the test of time, keeping the housings looking new for many years to come. The injection molded ABS housing is light-weight and much stronger than comparable cheap alternatives. The XB Tail lights may not be the cheapest new tail lights for your Mustang, but they're OE quality, and as the saying goes, you pay for what you get. Although the tails are new, we've sold many thousands of the XB Fog lights and to date, have only seen a small handful with problems... no joke.