TM 9-2320-209-20-3-3 c. Replacement. FRAME 1 1. Put four wires (1) in place as tagged. Using screwdriver, screw on and tighten four screws (2). Take off tags. 2. Screw two nuts (3) on switches (4), and put switches in place through holes in bracket (5). 3. Using wrenches, tighten two nuts (6). GO TO FRAME 2 18-391