Use this Denali T3 Wiring Adapter for plug and play connection of Denali Front T3 Lights to Harley-Davidson Motorcycles. The adapter simply plugs inline between the factory front turn signals to enable plug-&-play installation of Denali Front T3 Switchback Turn Signals. Add T3 switchback turn signals to the OEM handguards on your Harley-Davidson Pan America 1250 or add switchback turn signals to the engine guards on your Harley-Davison Street Glide, Road Glide, or Softail. For mounting to handguards, no additional amount is necessary. For mounting to engine guards, add the T3 engine guard mount.