PIAA wiring harnesses are complete with switch, relay, fuse and light connectors
First I like the black sheathing on the wires which blends in better with the black bike frame and is less obtrusive. Cleaner design with eliminating wiring between the relay and in-line fuse. Could have been about three feet shorter, but I get the fact that this has to fit a multitude of motorcycles, recreational vehicles,etc. Really simple to install and I had expected it to be more expensive. Good bang for the buck and excellent service.