Overview Looking to upgrade the styling of your S650 Mustang? Look no further. Introducing LED sidemarkers from Form Lighting. If you are looking to add a modern appearance to your Mustang, upgrading your sidemarker lamps is one of the easiest things you can do to make a big impact. Upgraded Styling. These Form Lighting sidemarkers illuminate brighter than the factory units with full-strips of LED chips. They are available in a smoked stealth option, a clear lens, or in an OEM red/amber color set. With these premium OE-grade replacements, you’ll stand out from the crowd with an extremely modern look. OEM-Grade Construction. Form Lighting sidemarkers are built with quality in mind and constructed using OEM-grade materials, including a UV-coated polycarbonate lens, automotive-grade LEDs and optics, and direct-fit connectors. Unlike other options on the market, each lamp features transient protection which prevents voltage spikes on the circuit board, ensuring long-term reliability. While they may not be the cheapest option on the market, the fit and finish of our lamps are superior to other aftermarket units. Plug-and-Play. Our LED sidemarkers for the S650 Mustang are completely plug-and play and will fit perfectly, without any body gaps. Simply take the factory housing out and reinstall. They were designed to plug into your factory connector, with no additional wiring needed. There are no errors, or flickering.