TM 9-2320-361-20 4-33. CIRCUIT BREAKER REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS All REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Hood raised and secured (TM 9-2320-361-10). Battery ground cable disconnected (para. 4-48). a. Removal NOTE Vehicle with auxiliary power outlets and personnel heaters have two additional circuit breakers located next to horn circuit breaker. Replacement procedures are the same for all circuit breakers. Tag wires for installation. 1. Disconnect wires (1) and (5) from circuit breaker (2). 2. Remove two screws (4) and circuit breaker (2) from firewall (3). b. Installation FOLLOW-ON TASKS: Connect battery ground cable (para. 4-48). Check operation of horn and personnel heater (TM 9-2320-361-10). 4-51