The Classic Sequential Tail Light (CST) kits are direct retrofit and replacement for incandescent light bulbs in classic vehicles. These kits incorporate high efficiency LED lights that increase tail light brightness, reliability and longevity. The kits replace all the functionality of the light bulbs they replace. This includes low level running light illumination, brake light illumination, turn signal illumination and back-up lighting where applicable. In addition, the kit includes a self-contained microprocessor and circuitry to enable a multitude of sequential lighting patterns. There is no separate sequential lighting control module to mount and wire up. The kit is designed to work with OEM tail light housing and lenses as well as aftermarket components.