TM 5-3805-254-20-1
ELECTRICAL SYSTEM - CONTINUED
KEY SWITCH
Current supplied by batteries when key switch is in on position. Current flows from key switch to accessories, gages,
switches, engine start button, and fuel shutoff switch through relay and automatic override module located behind
instrument panel.
ENGINE START BUTTON
Current supplied through key switch when in on position. When depressed, allows current to flow to energize starter
solenoid.
COMPRESSION BRAKE-JACOBS ENGINE BRAKEIOFF SWITCH
Current supplied by 15-amp circuit breaker. When turned on, current flows to energize pressure switch, throttle switch and
solenoids.
TA243701
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