To make the holes in the bars, use three note cards. Tape them around the bar ends and in the center. Mark the top so you have an idea of the top center. You can punch, cut or mark the holes, move them to the new bars and mark and drill and/or grind out the holes. Camfer the edges so you do not cut the wires. You might use a blow dryer to soften the tubing a bit when you pull the wires through. I oblonged the holes for the pin on each controller. It allowed me to rotate the controllers a bit so I can even them out. Do not use the controller to pull the wires out of the old bar if you don't have to, unless you want to fix it later. All of the extra wire I stuffed in the headlight. The end on the MC might hit the tach or come real close.