TM 5-3805-254-20-1
ELECTRICAL SYSTEM - CONTINUED
TRANSMISSION TEMP INDICATOR LAMP SWITCH
Current supplied through KEY SWITCH when turned on. When transmission oil temperature exceeds a preset
temperature, a bi-metallic strip bends to connect contact points, completing circuit and illuminating indicator lamp.
TRANSMISSION TEMP GAGE SWITCH
Electronic device whose resistance decreases proportionally as transmission oil temperature increases. Regulated current
flows to TRANSMISSION TEMP gage to indicate reading.
NEUTRAL SAFETY SWITCH
Current supplied through magnetic switch on firewall. When main transmission is in neutral (N), switch is grounded to
complete starting circuit to starter solenoid. When main transmission is in any other gear, hydraulic pressure prevents
switch from grounding.
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