I have a Radio Shack 15-1220 rotator and control unit and do not know how to connect the 5 wire cable. The control unit has terminals numbered 1-5, but the rotator has 5 screw terminals "without" numbers. do not want to damage the unit by hooking it up incorrectly. Anybody have a manual or schematic to advise me as to hookup would be GREATLY appreciated. Want to use it for Field Day SAT station. 73, Robert W6RQR