Used to slow the turn signal flash rate to normal after installing LED Turn Signals. Does not produce heat or put a load on the system. Slimline unit with long leads for easier placement under seat. Only 1 module needed per bike to cover front & rear signal conversion, or front OR rear signal conversion. Compatible with incandescent bulbs if only one set of signals has been upgraded to LED. Can be used with 4 way hazards (Unlike load equalizers that use resistors). Alarm compatible with a Lifetime manufacture warranty. Sealed, weather tight case. Dimensions: 4.2" x 0.6" x 1.4" Plug and play on 1996-2010 Softail (Except Rocker), 1997-2011 Dyna, 1999-2003 Sportster, 1997-2013 Harley-Davidson Electra Glide, Ultra Classic, Ultra Limited models (including CVO), Road King (FLHR), Road King Classic (FLHRC), Road Glide Ultra (FLTRU) and Road Glide Ultra CVO (FLTRUSE), 1997-2009 Road Glide Standard (FLTR), 2006-2009 Street Glide (FLHX) and 2010-2013 Tri Glide