Hi all. I mounted the auto-pilot that I got off my parts car under the hood, but where does the control knob mount in the dash ?? I have a convertible so the 4 knob spots are taken [ lights, top,wipers, key] Does this mean a vert can't get the auto-pilot option !?!? Rich. '58 Plymouth - "Christine", '59 DeSoto, '60 Imperial cnvt, '60 Fury cnvt.