The wiring harness is necessary to connect the CVO taillights to your bike.

The 2014-2020 models always use the "B" connector. 1996-2008 models use the "A" connector. Most 2009-2013 models will use the "B' connector, but some may use the "A" connector, so we would recommend confirming which connector you need for these models prior to ordering.

Ask your seller to make sure what generation CVO lights you have before ordering.