Hi all I have a 2009 harley nightster just bought it about a week ago. The front lights work just fine turn and 4ways no problems but the rear nothing except the running lights work. Ive changed all the fuses and bulbs and nothing can anyone help me.

 

Check under the fender to make sure no wires have come out of the track and rubbed. And also check the harness under the back seat they might have some corrosion and or moisture in them,

 

You can also check the connections in your tail light...Red/Yellow (brake), the violet (left), and brown (right). If all connections and wires are secure in the tail light, then start tracing towards the harness under seat.