What year is your bike?
Few things to look for.. if the bike was prewired for it youll notice in the fuse box whether that spot is vacant or not refer to your manual on its location.
If it is you may just need the lights and switch if it was pre wired. "Probably not"
If not the you would have to wire it right up.. at that point it's an after market set up.
Unless.. you can get the entire kit with switch, lights, fuse, harness, relay etc do so.
If not.you may have to run it all yourself id recommends taking your time and running the wires nicely and bringing them into the fuse box and making nice connections. Solder and shrink wrap other connection if you have to splice etc.. helps keep water out.