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3. INSTALLATION
Model 840 fits into a dash-panel cutout
measuring 2-1/16” (52mm)
TERMINAL ASSIGNMENT
Pin 1: Spare
Pin 2: Spare
Pin 3: B+ (Heater), 24 VDC heater power for freezer
option on 24 VDC vehicles
Pin 4: B+ (Heater), 36 VDC heater power for freezer
option on 36 VDC vehicles
Pin 5: Power, (12.0 to 15.0 VDC) supplied from Curtis
Model 1297 motor controller
Pin 6: Data Input from Curtis Model 1297 motor
controller
Pin 7: Spare
Pin 8: B- (Common)
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