GMC Sierra IV facelift (2022-2024) engine control module Wiring diagrams

2.7L TURBO 5-VOLT REF 1 5.3L ACCESSORY WAKEUP SERIAL DATA AUTOSAR CAN (PINS: 39 TO 48 NOT USED) BUS (-) 2 SERIAL DATA AUTOSAR CAN (PINS: 55 TO 62 NOT USED) BUS (-) 2 SERIAL DATA AUTOSAR CAN BUS (+) 2 SERIAL DATA BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENS SIG BRN WIRE BRN/WHT WIRE CLUTCH A CTRL CLUTCH B CTRL CLUTCH C CTRL CLUTCH SOLENOID CTRL COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ENGINE CTRL SENS ENGINE WIRING HARNESS JUNCTION BLOCK GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INPUT SPD GND LOW REF (1) OUTPUT SPD SIG RED/GRN WIRE RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK RUN/CRANK IGNITION 1 VOLT SIG GROUND BATT POS VOLT SOLENOID LOW SIDE CONTROL TCC ON/OFF SOLENOID A CTRL TCC ON/OFF SOLENOID B CTRL TRANS CLUTCH G CTRL TRANS CLUTCH H CTRL TRANS FLUID TEMP SENS SIG TRANS INTERNAL MODE SW MODE CTRL X TRANS HI SIDE DRIVER 1 SIG TRANS HI SIDE DRIVER 2 SIG TRANS INTERMEDIATE SPD SIG TRANS INTERNAL MODE SW MODE CTRL Y TRANS MAIN LINE (PINS: 4 TO 6 NOT USED) PRESSURE SOLENOID CTRL TRANS OIL TEMP SENS LO REF (PINS: 29 TO 32 NOT USED) TRANS SENS CIRCUIT 9 VOLT REF TRANS SENS CIRCUIT 9 VOLT REF (PINS: 9 TO 12 NOT USED) TRANSMISSION CONTROL MODULE (BEHIND LEFT CORNER OF RADIATOR) VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

2.7L TURBO 3.0L TURBO DIESEL 6.2L, 5.3L A/C COMPRESSOR CLUTCH RELAY CONTROL A/C REFRIGERANT PRESSURE SENS SIG BATTERY POSITIVE VOLTAGE BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CHARGE AIR COOLER IN TEMP SENS LOW REF CHARGE AIR COOLER INLET TEMP SENS SIG CHARGE AIR COOLER OUT TEMP SENS LOW REF CHARGE AIR COOLER OUTLET TEMP SENS SIG COMPUTER DATA LINES SYSTEM COOLANT DIVERTER VALVE ACTUATOR CONTROL CLOSE COOLANT DIVERTER VALVE ACTUATOR CONTROL OPEN COOLANT DIVERTER VALVE POSITION SIG COOLANT FLOW CONTROL ACTUATOR CONTROL CLOSE COOLANT FLOW CONTROL ACTUATOR CONTROL OPEN COOLANT FLOW CONTROL VALVE POSITION SIG COOLANT TEMP SENS 2 SIG DRIVER INFORMATION CENTER DISPLAY ENG BLOCK COOLANT TEMP SIG ENG BLOCK TEMP SENS SIG ENG CTRL VEHICLE SENS 5 VOLT REF 1 ENG INLET COOLANT TEMP SIG ENG INTEGRATED EXHAUST MANIFOLD TEMP SENS ENGINE CONTROL MODULE ENGINE CONTROL SENS LOW REF 1 ENGINE CONTROL SENS LOW REFERENCE 2 ENGINE CONTROL SENSORS 5 VOLT REFERENCE 1 ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE IND ENGINE INLET COOLANT TEMP SIG ENGINE INLET COOLANT TEMPERATURE SIG ENGINE OUTLET COOLANT TEMP SIG ENGINE WIRING HARNESS JUNCTION BLOCK ENGINE WTR CHARGE AIR COOLANT TEMP SIG GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER CONTROL MODULE J183 (3.0L TURBO DIESEL) LOGIC PVT SERIAL DATA POWERTRAIN CAN BUS (-) SERIAL DATA RED WIRE RED/BLU WIRE RED/BRN WIRE SIG GND VIO WIRE VIO/BLK WIRE WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE

2.7L TURBO 3.0L TURBO DIESEL 6.2L, 5.3L A/C COMPRESSOR CLUTCH RELAY CONTROL A/C REFRIGERANT PRESSURE SENS SIG BATTERY POSITIVE VOLTAGE BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CHARGE AIR COOLER IN TEMP SENS LOW REF CHARGE AIR COOLER INLET TEMP SENS SIG CHARGE AIR COOLER OUT TEMP SENS LOW REF CHARGE AIR COOLER OUTLET TEMP SENS SIG COMPUTER DATA LINES SYSTEM COOLANT DIVERTER VALVE ACTUATOR CONTROL CLOSE COOLANT DIVERTER VALVE ACTUATOR CONTROL OPEN COOLANT DIVERTER VALVE POSITION SIG COOLANT FLOW CONTROL ACTUATOR CONTROL CLOSE COOLANT FLOW CONTROL ACTUATOR CONTROL OPEN COOLANT FLOW CONTROL VALVE POSITION SIG COOLANT TEMP SENS 2 SIG DRIVER INFORMATION CENTER DISPLAY ENG BLOCK COOLANT TEMP SIG ENG BLOCK TEMP SENS SIG ENG CTRL VEHICLE SENS 5 VOLT REF 1 ENG INLET COOLANT TEMP SIG ENG INTEGRATED EXHAUST MANIFOLD TEMP SENS ENGINE CONTROL MODULE ENGINE CONTROL SENS LOW REF 1 ENGINE CONTROL SENS LOW REFERENCE 2 ENGINE CONTROL SENSORS 5 VOLT REFERENCE 1 ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE IND ENGINE INLET COOLANT TEMP SIG ENGINE INLET COOLANT TEMPERATURE SIG ENGINE OUTLET COOLANT TEMP SIG ENGINE WIRING HARNESS JUNCTION BLOCK ENGINE WTR CHARGE AIR COOLANT TEMP SIG GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER CONTROL MODULE J183 (3.0L TURBO DIESEL) LOGIC PVT SERIAL DATA POWERTRAIN CAN BUS (-) SERIAL DATA RED WIRE RED/BLU WIRE RED/BRN WIRE SIG GND VIO WIRE VIO/BLK WIRE WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE

2.7L TURBO 3.0L TURBO DIESEL 5.3L, 6.2L AUTOSAR CAN BUS AUTOSAR CAN BUS (-) 2 SER DATA BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CTRL MOD BRN/GRN WIRE BRN/VIO WIRE COLUMN LOCK MODULE (ON STEERING COLUMN, UNDER DASH) COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT COVER SWITCH ENGINE CONTROL MODULE EXTENDED CAB CREW CAB GRN/BLK WIRE GRN/YEL WIRE GRY WIRE GRY/VIO WIRE HOOD STATUS A SIG HOT AT ALL TIMES IGNITION OFF/ACCESSORY IGNITION VOLT LIN BUS 3 LOCK CTRL LOGIC NCA WIRE PASSENGER DOOR LOCK SWITCH PASSENGER FRONT SIDE DOOR WINDOW SWITCH POWER DISTRIBUTION SYSTEM RED/BRN WIRE RIGHT FRONT SIDE DOOR OUTSIDE HANDLE RIGHT FRONT SIDE DOOR OUTSIDE HANDLE SWITCH RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK RIGHT LOW FREQUENCY FRONT SIDE DOOR OUTSIDE HANDLE ANTENNA SIG GND UNLOCK CTRL WHT WIRE YEL WIRE YEL/VIO WIRE

ACTUATOR CLOSE CTRL ACTUATOR CTRL CLOSE ACTUATOR CTRL OPEN ACTUATOR OPEN CTRL AIR CONDITIONING REFRIGERANT PRESSURE SENSOR AIR TEMP SIG BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAMSHAFT POSI SENS 1 CANISTER PURGE SOL CTRL CHARGE IND CTRL CRANKSHAFT POSI SENS SIG CRANKSHAFT POSITION SENSOR ENGINE CONTROL MODULE EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE EXH MANIFOLD TEMP SIG EXHAUST SENS LOW REF 1 EXHAUST SOLENOID (1) GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR 2 HIGH SIG BANK 1 SENS 2 HIGH VOLT CTRL CYL 2 HIGH VOLT CTRL CYL 4 HIGH VOLT SPLY CYL 2 HIGH VOLT SPLY CYL 4 IGNITION CTRL 2 IGNITION CTRL 4 INLET COOLANT TEMP SIG INTAKE SENS LOW REF 1 INTAKE SOLENOID (1) KNOCK SENS 1 SIG KNOCK SENS 2 SIG KNOCK SENS LOW REF 1 KNOCK SENS LOW REF 2 LOGIC LOW CTRL BANK 1 SENS 2 LOW REF BANK 1 LOW SIG BANK 1 SENS 2 MANIFOLD ABSOLUTE PRESSURE, INTAKE AIR TEMPERATURE SENSOR MOTOR CLOSE CTRL MOTOR OPEN CTRL NCA WIRE OUTLET COOLANT TEMP SIG POSI SENS LOW REF POSI SENS VOLT PRESS SENS SIG SENS LOW REF SENS LOW REF 1 SENS SENT 1 SIG SOL VALVE CTRL BANK 1 STARTING/ CHARGING SYSTEM TURBOCHARGER BYPASS TURBOCHARGER WASTEGATE ACTUATOR VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRY WIRE W LOW REF WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE X LOW REF YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE CAN-BUS COMPUTER DATA LINES SYSTEM DATA DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE OIL IND ENGINE OIL PUMP CTRL EVAPORATIVE EMISSION CANISTER PURGE PUMP EXHAUST CAMSHAFT POSITION ACTUATOR SOLENOID VALVE EXHAUST SENS 1 VOLT REF FIELD DUTY CYCLE SIG FUEL GAUGE IND GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/VIO WIRE GRY/YEL WIRE HIGH CTRL HIGH VOLT CTRL CYL 1 HIGH VOLT CTRL CYL 3 HIGH VOLT SPLY CYL 1 HIGH VOLT SPLY CYL 3 IGNITION CTRL 1 IGNITION CTRL 3 INSTRUMENT PANEL CLUSTER CONTROL MODULE INTAKE CAMSHAFT POSITION ACTUATOR SOLENOID VALVE INTAKE SENS 1 VOLT REF KNOCK SENSOR #2 KNOCK SENSOR 1 LOGIC LOW CTRL MAIN RLY FUSED SPLY (1) MALFUNCTION IND LAMP OIL PUMP MOTOR CTRL POSI INTAKE SENS 1 SERIAL STARTING/ CHARGING SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRY WIRE WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT WIRE

ACCELERATOR PEDAL POSI SIG 1 ACTR CTRL CLOSE ACTR CTRL OPEN AMBIENT AIR TEMP SENS SIG AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION MANUAL SHIFT SHAFT POSITION SWITCH BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMP SENS 2 SIG COOLING FANS SYSTEM DFI HI VOLT SPLY CYL 1 DFI HI VOLT SPLY CYL 2 DFI HI VOLT SPLY CYL 5 DFI HI VOLT SPLY CYL 6 ENGINE CONTROL MODULE ENGINE CTRL MODULE LIN BUS 1 ENGINE CTRL MODULE LIN BUS 2 ENGINE CTRL MODULE LIN BUS 3 ENGINE CTRL SENS 5 VOLT REF 1 ENGINE CTRL SENS LOW REF 1 ENGINE OIL TEMP SENS 2 SIG EXH RESTRICTOR MTR CLOSED CTRL EXH RESTRICTOR MTR OPEN CTRL EXHAUST GAS RECIRCULATION VALVE 1 FPP RLY CTRL FRP SENS LOW REF FUSED SPLY VOLT 2 FUSED SPLY VOLT 5 GLOW PLUG 1 GLOW PLUG 1 CTRL GLOW PLUG 3 GLOW PLUG 6 GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE MAIN RLY FUSED SPLY VOLT 1 NCA WIRE OIL TEMP SENS SIG ORG/ WIRE POWERTRAIN MAIN RLY PRE-THROTTLE AIR TEMP SIG SW MODE CTRL Y TRANS INTERNAL MODE TRANSMISSIONS SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/WHT WIRE

ACTUATOR CTRL CLOSE ACTUATOR CTRL OPEN AIR COOLANT TEMP SIG BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE COOLANT DIVERTER VALVE COOLING FANS SYSTEM DFI HI VOLT CTRL CYL 1 DFI HI VOLT CTRL CYL 2 DFI HI VOLT CTRL CYL 5 DFI HI VOLT CTRL CYL 6 ENGINE BLOCK TEMP SENS SIG ENGINE CONTROL MODULE ENGINE COOLANT BYPASS VALVE ENGINE COOLANT FLOW CONTROL VALVE ENGINE COOLANT TEMPERATURE SENSOR ENGINE INLET COOLANT TEMP SIG ENGINE OIL PRESSURE SENSOR ENGINE WATER CHARGE EXH GAS RECIRCULATION 2 FRP SENS 2 SIG FUEL RAIL PRESS SENS SIG FUEL RAIL PRESSURE SENSOR GENERATOR FIELD DUTY CYCLE SIG GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE INTAKE MANIFOLD TUNING SOLENOID VALVE LOGIC MAIN ENGINE COOLANT FLOW CONTROL VALVE MAP SENS SIG OUTLET COOLANT TEMP SIG PARTICULATE FILTER EXHAUST PRESSURE DIFFERENTIAL SENSOR RED/VIO WIRE RED/WHT WIRE STARTING/ CHARGING SYSTEM THROTTLE POS SENS SENT 1 SIG VALVE CLOSE CTRL VALVE OPEN CTRL VALVE POSI SENS SIG VIO WIRE VIO/GRN WIRE VIO/WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRY WIRE

5 V REF 1 ACTUATOR CLOSE CTRL BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE PEDAL POSITION SENSOR BRN WIRE BRN/BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE SENSOR ENGINE OIL PUMP CTRL EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HI SIG BANK 1 SENS (1) HI SIG BANK 2 SENS 1 HI SIG BANK 2 SENS 2 IGNITION CTRL (5) IGNITION CTRL 3 IGNITION CTRL 4 IGNITION CTRL 6 KNOCK SENS LOW REF 1 KNOCK SENS LOW REF 2 LIN BUS 1 LIN BUS 2 LOW CTRL BANK 1 SENS 1 LOW CTRL BANK 1 SENS 2 LOW CTRL BANK 2 SENS (1) LOW CTRL BANK 2 SENS (2) LOW REF (1) LOW REF BANK 2 LOW SIG BANK 1 SENS (1) LOW SIG BANK 2 SENS (2) LOW SIG BANK 2 SENS 1 NCA WIRE SOL ENABLE SIG 3 SOL ENABLE SIG 4 SOL ENABLE SIG 5 SOL ENABLE SIG 6 SOL VALVE CTRL 3 SOL VALVE CTRL 5 SOL VALVE CTRL 6 SPLY VOLT 5 TRANSMISSIONS SYSTEM VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/WHT WIRE

5 V REF 1 ACTUATOR CLOSE CTRL BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE PEDAL POSITION SENSOR BRN WIRE BRN/BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE SENSOR ENGINE OIL PUMP CTRL EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HI SIG BANK 1 SENS (1) HI SIG BANK 2 SENS 1 HI SIG BANK 2 SENS 2 IGNITION CTRL (5) IGNITION CTRL 3 IGNITION CTRL 4 IGNITION CTRL 6 KNOCK SENS LOW REF 1 KNOCK SENS LOW REF 2 LIN BUS 1 LIN BUS 2 LOW CTRL BANK 1 SENS 1 LOW CTRL BANK 1 SENS 2 LOW CTRL BANK 2 SENS (1) LOW CTRL BANK 2 SENS (2) LOW REF (1) LOW REF BANK 2 LOW SIG BANK 1 SENS (1) LOW SIG BANK 2 SENS (2) LOW SIG BANK 2 SENS 1 NCA WIRE SOL ENABLE SIG 3 SOL ENABLE SIG 4 SOL ENABLE SIG 5 SOL ENABLE SIG 6 SOL VALVE CTRL 3 SOL VALVE CTRL 5 SOL VALVE CTRL 6 SPLY VOLT 5 TRANSMISSIONS SYSTEM VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/WHT WIRE