TM 9-2320-361-34 7-3. FRONT WIRING HARNESS REPLACEMENT (Contd) 19. Connect wires (25) and (26) to preheater switch (27). 20. Connect plug (23) to lamp selector switch (24). 21. Install clamp (28) on steering column (29) and front wiring harness (1) with screw (31) and nut (30). 7-29