These wiring extensions are used when you are installing different handlebars on any 2007-2010 Softail, 2007-2011 Dyna and 2007-2013 Sportster models.. These are professional harnesses with factory pins installed. All you need to do is to remove the pins from the factory plug and add the extensions. This kit is complete with color coded wires and heat shrink tubing. Available in 4", 8", 12" and 15" lengths.