TM 9-2320-361-34 15-24. 115- AND 24-VOLT WIRING HARNESS REPLACEMENT (Contd) 29. Remove four screws (4), lockwashers (3), and cover (5) from multibreaker box (2). Discard lockwashers (3). 30. Remove four screws (6), lockwashers (7), and cover (8) from blackout switch (1). Discard lockwashers (7). 31. Remove five screws (12), lockwashers (11), and wires (9), (10), (13), (14), (15), (16), and (17) from blackout switch (1). 15-84