Our hard-wired Illuminator™ provides running light, brake light and turn signal functions into (1) wire for left and (1) wire for right side rear turn signals. This modules also has a built-in Load Equalizer to prevent rapid flashing turn signals. FITS: (Sportster 1986-1996) (Dyna 1985-1996) Softail & FXR 1986-1995) (Road King & Electra Glide 1985-1990)