Next I turned down the plastic bottom part of the antenna base to match the OD of the aluminum piece and painted the aluminum to match the plastic. Then insert the end of the antenna into the bottom half of the spacer, up through the hole in the fender, and then slide on the upper spacer half. Finally the plastic base and the pivot piece and insert and tighten the base screw to hold the base tight in the fender. Then attach the antenna to the base pivot and hook up the stock antenna cable to the new antenna cable (stock has a female plug, new antenna has a male plug).   (9/11)