Features unique electronics with light emitting diodes. Blue indicates fuel level in the tank. Flashing Red indicates fuel level is low. Wiring harness included for easy installation. Fits carbureted 2001 – 2003 FXDL, FXST/S/B, FLSTC/F/S and 2001 – 2002 FLHR models. Does not fit any electronic fuel injected models.