2013 and Older Harley Davidson Motorcycles
If you have a 2013 or older Harley Davidson Touring Model (Street Glide, Road King, Ultra Classic, Switchback or Electra Glide etc.), you will need the adapter ring.
2013 or older Harley Davidson Dyna or Softail models will not need any accessories.
2014 and Newer Harley Davidson Motorcycles
2014 - 2017 Softail model will not need any additional installation accessories. Does not fit 2018 and newer Softail models.
2014 or newer Switchback models will require an adapter ring for the installation.
2014 or newer Street Glide, Freewheeler and Road King models will need the Dual Bulb Adapter Harness (899).
2014 or newer Harley Davidson Model Motorcycles not listed above will need the Single Bulb Adapter Harness (897).
If your motorcycle came with an LED headlight from the factory, you will need the Single Bulb Adapter Harness (897)
2014 and Newer Indian Motorcycles
If you have a 2020 or newer Indian model you will need the IND-H4-MX150 Adapter Harness.
If you have a 2022 or new Indian Pursuit, you will need the IND-MX150-EL60WR adapter harness.
Indian Roadmaster models will require an adapter for the passing lights, part number IPLA01.