I have try just using one wire pulling two and it did not work as when one side is tight, it does not pull the loose side further. Using a rod solve the problem. The handle will pull the center wire. As on side get tight. it will continue to pull the other side. to start I use a aluminum angle and cut one third in to each side. then bend the open end up to form the mounting bracket. all left is to drill the holes on the flat side the rod and for the wires, I drill a hole in the handle bar and rivet the modifyed bracket to it.