5 Multiplexed Electrical System Service Manual Chassis Node Comparison Chart - (Pinout) 5 - 8 PM819023/KM815057 (08/14/2012) Conn Pin Number Circuit Function C 1 Analog return 2 Electric over air switch 1 output 3 Electric over air switch 2 output 4 Transfer case oil temperature input 5 Electric over air switch 3 output 6 Electric over air switch 4 output 7 PTO oil temperature input 8 Electric over air switch 5 output 9 Electric over air switch 6 output 10 Rear axle temperature input 11 Electric over air switch 7 output 12 Electric over air switch 8 output 13 Front axle temperature input 14 DRL headlamps (Perterbilt) 15 Battery power - 8 16 Center/steer axle temperature input 17 Windshield wiper motor control output 18 Trailer engine coolant valve 19 Battery power - 8 20 Right turn trailer output 21 Back-up alarm control output Conn Pin Number Circuit Function A 1 Left headlamp low beam output (PWM) 2 Power - ignition input 3 Ground 4 Battery power - 1 5 Neutral switch input 6 Fuel level 1 input 7 Right headlamp high beam output 8 Backup switch input 9 Fuel level 2 input 10 Reverse loads (Peterbilt) Snowplow (Kenworth) 11 Spare digital input 12 Spare analog input 13 Left headlamp high beam output 14 (reserved) 15 Spare analog input 16 Battery power - 2 17 (reserved) 18 F-CAN high 19 Right headlamp low beam output (PWM) 20 (reserved) 21 F-CAN low B 1 Battery power - 3 2 Right turn/stop rear output (Tractor) 3 Power supply +5V sensors 4 Left turn front/side output 5 Fuel filter restriction input 6 Transmission oil temperature - auxiliary input 7 Right turn front/side output 8 Spare analog input 9 General oil temperature input 10 Battery power - 4 11 Spare analog input 12 Reserve for remote accelerator 13 Left turn/stop rear output 14 Reserve for clutch wear sensor 15 Driving/fog lamps output 16 Left turn trailer output 17 Ammeter input 18 Battery power - 7 19 Battery power - 5 20 Left turn front/DRL output 21 Right turn front/DRL output