Another new and unique product from Scott Drake. Scott's goal was to provide the classic Mustang with sequential turn signals like the T-birds and Shelby's of the 60's. The inserts alone increase the brightness of the taillamps by 200%. Our sequential light systems come complete with control modules, an electronic variable flasher and 2 dedicated three bulb inserts, ready to install in your taillamp housings. All required electrical connectors are provided. This is NOT a replacement for Shelby sequential taillights. Assembly required. Check out our hood scoop mounted sequential lights too.