Page Contents:
In this article, you will find information about the fuses of the Ford F-650 / F-750 (models 2021, 2022, 2023, and 2024), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

Checking and Replacing Fuses in Ford F-650 / F-750
If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components. Use the provided fuse puller tool to remove a fuse. It is on the fuse panel cover.
Caution!
- Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire.
- Always disconnect the battery before servicing high current fuses.
- To reduce risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs.
Location of Fuse Boxes
Passenger Compartment Fuse Box:
The fuse panel is in the passenger footwell. Remove the panel cover to access the fuses. Pull the fuse panel cover toward you to remove it. When the clips of the panel disengage, let the panel fall easily.

Engine Compartment Fuse Box:
The engine compartment fuse box is in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.

Fuse Box Diagrams
2021
Passenger Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | - | Not used. |
| 2 | 10A | Right-hand and left-hand front door lock switch. Telescopic mirror switch. Right-hand and left-hand front window switch (two window units). Right-hand and left-hand front window motor. Inverter. |
| 3 | 7.5A | Power mirror switch. |
| 4 | 20A | Ancillary translator module. |
| 5 | - | Not used. |
| 6 | - | Not used. |
| 7 | 10A | Smart data link connector power. Air brake diagnostic connector. |
| 8 | - | Not used. |
| 9 | - | Not used. |
| 10 | - | Not used. |
| 11 | - | Not used. |
| 12 | 7.5A | Smart data link connector. Enterprise wired-in-device. |
| 13 | 7.5A | Cluster. Steering column control module. |
| 14 | - | Not used. |
| 15 | 15A | Climate control module. |
| 16 | - | Not used. |
| 17 | - | Not used. |
| 18 | 7.5A | Yaw sensor. Electronic stability control and non-electric stability control. |
| 19 | - | Not used. |
| 20 | 5A | Ignition switch. |
| 21 | 5A | Exhaust brake switch. |
| 22 | - | Not used. |
| 23 | 30A | Left-hand front window motor. |
| 24 | - | Not used. |
| 25 | - | Not used. |
| 26 | 30A | Right-hand front motor window. |
| 27 | - | Not used. |
| 28 | - | Not used. |
| 29 | 15A | Relay folding mirror. |
| 30 | 5A | Brake signal for air brake. Customer access stop lamp signal. Brake on-off isolation relay. Trailer tow stop lamp relay. |
| 31 | 10A | Upfitter interface module. Remote radio frequency receiver. |
| 32 | 20A | Radio. |
| 33 | - | Not used. |
| 34 | - | Not used. |
| 35 | 5A | Tow haul switch. |
| 36 | 15A | Lane departure warning camera. |
| 37 | - | Not used. |
| 38 | 30A | Left-hand front power window switch (four window units). |
Engine Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | 20A | Horn. |
| 2 | 40A | Blower motor. Blower motor control. |
| 3 | - | Not used. |
| 4 | 30A | Starter motor. |
| 5 | - | Not used. |
| 6 | 20A | Upfitter relay 4. |
| 8 | - | Not used. |
| 10 | - | Not used. |
| 12 | - | Not used. |
| 13 | 10A | Run/start spare. |
| 14 | 10A | Adaptive cruise control. |
| 15 | 10A | Blower motor relay. |
| 15 | 20A | Air dryer. |
| 17 | 10A | Powertrain control module - ignition status run power. Glow plug control module - ignition status run power (diesel). |
| 18 | 10A | Anti-lock brake system run/start. |
| 19 | 10A | Transmission control module. Ignition status run power (diesel). |
| 20 | 30A | Windshield wiper motor. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | 10A | Alternator 2 (dual alternator only). |
| 24 | 40A | Body control module run power 2 bus. |
| 25 | 50A | Body control module run power 1 bus. |
| 26 | - | Not used. |
| 27 | 20A | Body builder battery feed. |
| 28 | - | Not used. |
| 29 | 10A | Alternator 1 A-Line. |
| 30 | - | Not used. |
| 31 | 60A | Hydromax pump. |
| 32 | 20A | Powertrain control module. |
| 33 | 20A | Canistervent solenoid (gas). Canister purge solenoid (gas). Variable cam timing actuator 11 (gas). Heated exhaust gas oxygen sensor (gas). Urea tank power (diesel). Exhaust gas recirculation cool bypass valve (diesel). |
| 34 | 10A | A/C clutch relay. Customer access vehicle power 3 feed. Variable oil pump (diesel). Coolingfan (diesel). Fan clutch (gas). |
| 35 | 20A | Coil on plug (gas) Urea tank (diesel). Glow plug controller (diesel). Nitrogen oxide sensor control module (diesel). Particulate matter sensor (diesel). |
| 36 | 10A | Fuel volume control value (diesel). Fuel pressure regulator (diesel). |
| 37 | - | Not used. |
| 38 | - | Not used. |
| 39 | - | Not used. |
| 41 | 30A | Trailer brake control module. |
| 43 | - | Not used. |
| 45 | - | Not used. |
| 46 | 10A | A/C clutch solenoid. |
| 47 | 40A | Upfitter relay 1. |
| 48 | 20A | Upfitter run and accessory feed. |
| 49 | 30A | Pump electronics module (gas). Fuel pump (diesel). |
| 50 | 15A | Injector power (gas). |
| 51 | 20A | Power point #1. |
| 52 | - | Not used. |
| 53 | 30A | Trailer tow park lamp. |
| 54 | - | Not used. |
| 55 | 20A | Upfitter relay 3. |
| 56 | - | Not used. |
| 58 | 5A | USB power. |
| 59 | - | Not used. |
| 60 | 10A | Dual fuel tank selector switch (diesel). |
| 61 | - | Not used. |
| 62 | - | Not used. |
| 63 | 20A | Driver seat compressor. |
| 64 | 20A | Passenger seat compressor. |
| 65 | - | Not used. |
| 66 | 10A | Four pack solenoid differential lock. |
| 67 | 10A | Hydromax relay power. |
| 69 | - | Not used. |
| 70 | 40A | Inverter. |
| 71 | 30A | Anti-lock brake system valves. |
| 72 | 10A | Brake on-off switch (hydraulic brakes). Stop lamp air pressure switch 1 and 2 (air brakes). |
| 73 | - | Not used. |
| 74 | 15A | Heated mirror. |
| 75 | - | Not used. |
| 76 | 60A | Body control module battery feed. |
| 77 | 30A | Body control module voltage quality monitor power feed. |
| 78 | 10A | Transmission module (diesel). |
| 79 | 5A | Hydromax pump monitor. |
| 80 | 10A | Trailer tow backup signal. |
| 81 | - | Not used. |
| 82 | 5A | Upfitter switch (factory location for ignition power). |
| 83 | 5A | Upfitter switch (optional location for power at all times). |
| 84 | - | Not used. |
| 85 | - | Not used. |
| 86 | - | Not used. |
| 87 | - | Not used. |
| 88 | 10A | Cargo lamps. |
| 89 | - | Not used. |
| 91 | - | Not used. |
| 93 | - | Not used. |
| 94 | - | Not used. |
| 95 | 20A | Stop lamps. Trailer tow stop lamps. |
| 96 | - | Not used. |
| 97 | - | Not used. |
| 98 | 30A | Trailer tow battery charge. |
| 99 | 40A | Upfitter relay 2. |
| 100 | 25A | Glow plug controller (diesel). |
| 101 | - | Not used. |
| 102 | - | Not used. |
| 103 | - | Not used. |
| 104 | - | Not used. |
| 105 | 15A | Trailer tow stop and turn relay. |
| R02 | - | Not used. |
| R05 | - | Not used. |
2022
Passenger Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | - | Not used. |
| 2 | 10A | Right-hand and left-hand front door lock switch. Telescopic mirror switch. Right-hand and left-hand front window switch (two window units). Right-hand and left-hand front window motor. Inverter. |
| 3 | 7.5A | Power mirror switch. |
| 4 | 20A | Ancillary translator module. |
| 5 | - | Not used. |
| 6 | - | Not used. |
| 7 | 10A | Smart data link connector power. Air brake diagnostic connector. |
| 8 | - | Not used. |
| 9 | - | Not used. |
| 10 | - | Not used. |
| 11 | - | Not used. |
| 12 | 7.5A | Smart data link connector. |
| 13 | 7.5A | Cluster. Steering column control module. |
| 14 | - | Not used. |
| 15 | 15A | Climate control module. |
| 16 | - | Not used. |
| 17 | - | Not used. |
| 18 | 7.5A | Yaw sensor. Electronic stability control and non-electric stability control. |
| 19 | 5A | Telematics control unit module. |
| 20 | 5A | Ignition switch. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | 30A | Left-hand front window motor. |
| 24 | - | Not used. |
| 25 | - | Not used. |
| 26 | 30A | Right-hand front motor window. |
| 27 | - | Not used. |
| 28 | - | Not used. |
| 29 | 15A | Relay folding mirror. |
| 30 | 5A | Brake signal for air brake. Customer access stoplamp signal. Brake on-off isolation relay. Trai ler tow stoplamp relay. |
| 31 | 10A | Upfitter interface module. Remote radio frequency receiver. |
| 32 | 20A | Radio. |
| 33 | - | Not used. |
| 34 | - | Not used. |
| 35 | 5A | Tow haul switch. |
| 35 | 15A | Lane departure warning camera. |
| 37 | - | Not used. |
| 38 | 30A | Left-hand front power window switch (four window units). |
Engine Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | 20A | Horn. |
| 2 | 40A | Blower motor. Blower motor control. |
| 3 | 20A | Upfit - frame. |
| 4 | 30A | Starter motor. |
| 5 | - | Not used. |
| 6 | 20A | Upfitter relay 4. |
| 8 | - | Not used. |
| 10 | - | Not used. |
| 12 | - | Not used. |
| 13 | 10A | Run/start spare. Remote climate control module relays. |
| 14 | 10A | Adaptive cruise control. |
| 15 | 10A | Blower motor relay. |
| 16 | 20A | Air dryer. |
| 17 | 10A | Powertrain control module - ignition status run power. Glow plug control module - ignition status run power (diesel). |
| 18 | 10A | Anti-lock brake system run/start. |
| 19 | 10A | Transmission control module. Ignition status run power (diesel). |
| 20 | 30A | Windshield wiper motor. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | 10A | Alternator 2 (dualalternator only). |
| 24 | 40A | Body control module run power 2 bus. |
| 25 | 50A | Body control module run power 1 bus. |
| 26 | - | Not used. |
| 27 | 20A | Body builder battery feed. |
| 28 | - | Not used. |
| 29 | 10A | Alternator 1 A-Line. |
| 30 | - | Not used. |
| 31 | 60A | Hydromax pump. |
| 32 | 20A | Powertrain control module. |
| 33 | 20A | Canisterventsolenoid (gas). Canister purge solenoid (gas). Variable cam timing actuator 11 (gas). Heated exhaust gas oxygen sensor (gas). Urea tank power (diesel). Exhaust gas recirculation cool bypass valve (diesel). |
| 34 | 10A | A/C clutch relay. Customer access vehicle power 3 feed. Variable oil pump (diesel). Cooling fan (diesel). Fan clutch (gas). Exhaust brake switch. |
| 35 | 20A | Coil on plug (gas) Urea tank (diesel). Glow plug controller (diesel). Nitrogen oxide sensor control module (diesel). Particulate matter sensor (diesel). |
| 36 | 10A | Fuel volume control value (diesel). Fuel pressure regulator (diesel). |
| 37 | - | Not used. |
| 38 | - | Not used. |
| 39 | - | Not used. |
| 41 | 30A | Trailer brake control module. |
| 43 | 30A | Upfit - chassis instrument panei. |
| 45 | - | Not used. |
| 46 | 10A | A/C clutch solenoid. |
| 47 | 40A | Upfitter relay 1. |
| 48 | 20A | Upfitter run and accessory feed. |
| 49 | 30A | Pump electronics module (gas). Fuel pump (diesel). |
| 50 | 15A | Injector power (gas). |
| 51 | 20A | Power point #1. |
| 52 | - | Not used. |
| 53 | 30A | Trailer tow park lamp. |
| 54 | - | Not used. |
| 55 | 20A | Upfitter relay 3. |
| 56 | - | Not used. |
| 58 | 5A | USB power. |
| 59 | 10A | U-Haul park lamps. |
| 60 | 10A | Dual fuel tank selector switch (diesel). |
| 61 | - | Not used. |
| 62 | - | Not used. |
| 63 | 20A | Driver seat compressor. |
| 64 | 20A | Passenger seat compressor. |
| 65 | 10A | Upfit - run activate feed. |
| 66 | 10A | Four pack solenoid differen-tial lock. |
| 67 | 10A | Hydromax relay power. |
| 69 | - | Not used. |
| 70 | 40A | Inverter. |
| 71 | 30A | Anti-lock brake system valves. |
| 72 | 10A | Brake on-off switch (hydraulic brakes). Stoplamp air pressure switch 1 and 2 (air brakes). |
| 73 | - | Not used. |
| 74 | 15A | Heated mirror. |
| 75 | - | Not used. |
| 76 | 60A | Body control module battery feed. |
| 77 | 30A | Body control module voltage quality monitor power feed. |
| 78 | 10A | Transmission module (diesel). |
| 79 | 5A | Hydromax pump monitor. |
| 80 | 10A | Trailer tow backup signal. |
| 81 | - | Not used. |
| 82 | 5A | Upfitter switch (factory location for ignition power). |
| 83 | 5A | Upfitter switch (optional location for power at all times). |
| 84 | - | Not used. |
| 85 | - | Not used. |
| 86 | - | Not used. |
| 87 | - | Not used. |
| 88 | 10A | Cargo lamps. |
| 89 | - | Not used. |
| 91 | 40A | Upfit - B-pillar. |
| 93 | - | Not used. |
| 94 | - | Not used. |
| 95 | 20A | Stoplamps. Trailer tow stoplamps. |
| 96 | - | Not used. |
| 97 | - | Not used. |
| 98 | 30A | Trailer tow battery charge. |
| 99 | 40A | Upfitter relay 2. |
| 100 | 25A | Glow plug controller (diesel). |
| 101 | - | Not used. |
| 102 | - | Not used. |
| 103 | - | Not used. |
| 104 | - | Not used. |
| 105 | 15A | Trailer tow stoplamp and turn relay. |
2023
Passenger Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | - | Not used. |
| 2 | 10A | Right-hand and left-hand front door lock switch. Telescopic mirror switch. Right-hand and left-hand front window switch (two window units). Right-hand and left-hand front window motor. Inverter. |
| 3 | 7.5A | Power mirror switch. |
| 4 | 20A | Ancillary translator module. |
| 5 | - | Not used. |
| 6 | - | Not used. |
| 7 | 10A | Smart data link connector power. Air brake diagnostic connector. |
| 8 | - | Not used. |
| 9 | - | Not used. |
| 10 | - | Not used. |
| 11 | - | Not used. |
| 12 | 7.5A | Smart data link connector. |
| 13 | 7.5A | Cluster. Steering column control module. |
| 14 | - | Not used. |
| 15 | 15A | Climate control module. |
| 16 | - | Not used. |
| 17 | - | Not used. |
| 18 | 7.5A | Yaw sensor. Electronic stability control and non-electric stability control. |
| 19 | 5A | Telematics control unit module. |
| 20 | 5A | Ignition switch. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | 30A | Left-hand front window motor. |
| 24 | - | Not used. |
| 25 | - | Not used. |
| 26 | 30A | Right-hand front motor window. |
| 27 | - | Not used. |
| 28 | - | Not used. |
| 29 | 15A | Relay folding mirror. |
| 30 | 5A | Brake signal for air brake. Customer access stoplamp signal. Brake on-off isolation relay. Trai ler tow stoplamp relay. |
| 31 | 10A | Upfitter interface module. Remote radio frequency receiver. |
| 32 | 20A | Radio. |
| 33 | - | Not used. |
| 34 | - | Not used. |
| 35 | 5A | Tow haul switch. |
| 36 | 15A | Lane departure warning camera. |
| 37 | - | Not used. |
| 38 | 30A | Left-hand front power window switch (four window units). |
Engine Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | 20A | Horn. |
| 2 | 40A | Blower motor. Blower motor control. |
| 3 | 20A | Upfitter - trame. |
| 4 | 30A | Starter motor. |
| 5 | - | Not used. |
| 6 | 20A | Upfitter relay 4. |
| 8 | - | Not used. |
| 10 | - | Not used. |
| 12 | - | Not used. |
| 13 | 10A | Run/start spare. |
| 14 | 10A | Adaptive cruise control. |
| 15 | 10A | Blower motor relay. |
| 16 | 20A | Air dryer. |
| 17 | 10A | Powertrain control module - ignition status run power. Glow plug control module -ignition status run power (diesel). |
| 18 | 10A | Anti-lock brake system run/ start. |
| 19 | 10A | Transmission control module. Ignition status run power (diesel). |
| 20 | 30A | Windshield wiper motor. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | 10A | Alternator 2 (dualalternator only). |
| 24 | 40A | Body control module run power 2 bus. |
| 25 | 50A | Body control module run power 1 bus. |
| 26 | - | Not used. |
| 27 | 20A | Upfitter battery feed. |
| 28 | - | Not used. |
| 29 | 10A | Alternator 1 A-Line. |
| 30 | - | Not used. |
| 31 | 60A | Hydromax pump. |
| 32 | 20A | Powertrain control module. |
| 33 | 20A | Canistervent solenoid (gas). Canister purge solenoid (gas). Variable cam timing actuator 11 (gas). Heated exhaust gas oxygen sensor (gas). Urea tank power (diesel). Exhaust gas recirculation cool bypass valve (diesel). |
| 34 | 10A | A/C clutch relay. Customer access vehicle power 3 feed. Variable oil pump (diesel). Coolingfan (diesel). Fan clutch (gas). Exhaust brake switch. Variable oil pressure control (gas) |
| 35 | 20A | Coil on plug (gas) Urea tank (diesel). Glow plug controller (diesel). Nitrogen oxide sensor control module (diesel). Particulate matter sensor (diesel). |
| 36 | 10A | Fuel volume control value (diesel). Fuel pressure regulator (diesel). |
| 37 | - | Not used. |
| 38 | - | Not used. |
| 39 | - | Not used. |
| 41 | 30A | Trailer brake control module. |
| 43 | 30A | Upfitter spare. |
| 45 | - | Not used. |
| 46 | 10A | A/C clutch solenoid. |
| 47 | 40A | Upfitter relay 1. |
| 48 | 20A | Upfitter run and accessory feed. |
| 49 | 30A | Pump electronics module (gas). Fuel pump (diesel). |
| 50 | 15A | Injector power (gas). |
| 51 | 20A | Power point #1. |
| 52 | - | Not used. |
| 53 | 30A | Trailer tow park lamp. |
| 54 | - | Not used. |
| 55 | 20A | Upfitter relay 3. |
| 56 | - | Not used. |
| 58 | 5A | USB power. |
| 59 | 10A | U-Haul park lamps. |
| 60 | 10A | Dual fuel tank selector switch (diesel). |
| 61 | - | Not used. |
| 62 | - | Not used. |
| 63 | 20A | Driver seat compressor. |
| 64 | 20A | Passenger seat compressor. |
| 65 | 10A | Upfitter - run activate feed. |
| 66 | 10A | Four pack solenoid differen-tial lock. |
| 67 | 10A | Hydromax relay power. |
| 69 | - | Not used. |
| 70 | 40A | Inverter. |
| 71 | 30A | Anti-lock brake system valves. |
| 72 | 10A | Brake on-off switch (hydraulic brakes). Stoplamp air pressure switch 1 and 2 (air brakes). |
| 73 | - | Not used. |
| 74 | 15A | Heated mirror. |
| 75 | - | Not used. |
| 76 | 60A | Body control module battery feed. |
| 77 | 30A | Body control module voltage quality monitor power feed. |
| 78 | 10A | Transmission module (diesel). |
| 79 | 5A | Hydromax pump monitor. |
| 80 | 10A | Trailer tow backup signal. |
| 81 | - | Not used. |
| 82 | 5A | Upfitter switch (factory location for ignition power). |
| 83 | 5A | Upfitter switch (optional location for power at all times). |
| 84 | - | Not used. |
| 85 | - | Not used. |
| 86 | - | Not used. |
| 87 | - | Not used. |
| 88 | 10A | Cargo lamps. |
| 89 | - | Not used. |
| 91 | 40A | Upfitter - B-pillar. |
| 93 | - | Not used. |
| 94 | - | Not used. |
| 95 | 20A | Stoplamps. Trailer tow stoplamps. |
| 96 | - | Not used. |
| 97 | - | Not used. |
| 98 | 30A | Trailer tow battery charge. |
| 99 | 40A | Upfitter relay 2. |
| 100 | 25A | Glow plug controller (diesel). |
| 101 | - | Not used. |
| 102 | - | Not used. |
| 103 | - | Not used. |
| 104 | - | Not used. |
| 105 | 15A | Trailer tow stoplamp and turn relay. |
2024
Passenger Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | - | Not used. |
| 2 | 10A | Right-hand and left-hand front door lock switch. Telescopic mirror switch. Right-hand and left-hand front window switch (two window units). Right-hand and left-hand front window motor. Inverter. |
| 3 | 7.5A | Power mirror switch. |
| 4 | 20A | Ancillary translator module. |
| 5 | - | Not used. |
| 6 | - | Not used. |
| 7 | 10A | Smart data link connector power. Air brake diagnostic connector. |
| 8 | - | Not used. |
| 9 | - | Not used. |
| 10 | - | Not used. |
| 11 | - | Not used. |
| 12 | 7.5A | Smart data link connector. |
| 13 | 7.5A | Instrument Cluster. Steering column control module. |
| 14 | - | Not used. |
| 15 | 15A | Climate control module. |
| 15 | - | Not used. |
| 17 | - | Not used. |
| 18 | 7.5A | Yaw sensor. Electronic stability control and non-electronic stability control. |
| 19 | 5A | Telematics control unit module. |
| 20 | 5A | Ignition switch. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | 30A | Left-hand front window motor. |
| 24 | - | Not used. |
| 25 | - | Not used. |
| 26 | 30A | Right-hand front window motor. |
| 27 | - | Not used. |
| 28 | - | Not used. |
| 29 | 15A | Relay folding mirror. |
| 30 | 5A | Brake signal for air brake. Customer access stoplamp signal. Brake on-off isolation relay. Trailer tow stoplamp relay. |
| 31 | 10A | Upfitter interface module. Remote radio frequency receiver. |
| 32 | 20A | Radio. |
| 33 | - | Not used. |
| 34 | - | Not used. |
| 35 | 5A | Tow haul switch. |
| 36 | 15A | Lane departure warning camera. Mirror display. |
| 37 | - | Not used. |
| 38 | 30A | Left-hand front power window switch (four window units). |
Engine Compartment Fuse Box

| № | A | Protected Component |
|---|---|---|
| 1 | 20A | Horn. |
| 2 | 40A | Blower motor. Blower motor control. |
| 3 | 20A | Upfitter - frame. |
| 4 | 30A | Starter motor. |
| 5 | - | Not used. |
| 6 | 20A | Upfitter relay 4. |
| 8 | - | Not used. |
| 10 | - | Not used. |
| 12 | - | Not used. |
| 13 | 10A | Run/start spare. Rear view camera. |
| 14 | 10A | Adaptive cruise control. |
| 15 | 10A | Blower motor relay. |
| 15 | 20A | Air dryer. |
| 17 | 10A | Powertrain control module - ignition status run power. Glow plug control module - ignition status run power (diesel). |
| 18 | 10A | Anti-lock brake system run/start. |
| 19 | 10A | Transmission control module - Ignition status run power (diesel). |
| 20 | 30A | Windshield wiper motor. |
| 21 | - | Not used. |
| 22 | - | Not used. |
| 23 | - | Not used. |
| 24 | 40A | Body control module run power 2 bus. |
| 25 | 50A | Body control module run power 1 bus. |
| 26 | - | Not used. |
| 27 | 20A | Upfitter battery feed. |
| 28 | - | Not used. |
| 29 | 10A | Glow plug relay coil. |
| 30 | - | Not used. |
| 31 | 60A | Hydromax pump. |
| 32 | 20A | Powertrain control module. |
| 33 | 20A | Heater exhaust gas oxygen sensor 11 (gas). Heater exhaust gas oxygen sensor 12 (gas). Heater exhaust gas oxygen sensor 21 (gas). Canistervent solenoid (gas). Canister purge solenoid (gas). Variable camshaft timing actuator 11 (gas). Exhaust gas recirculation cooling bypass valve (diesel). |
| 34 | 10A | A/C clutch relay (diesel). Variable oil pump (diesel). Cooling fan (diesel). Fan clutch (gas). Exhaust brake switch (diesel). Variable oil pressure control (gas). Customer access vehicle power 3 feed. |
| 35 | 20A | Coil on plug (gas). Nitrogen oxide sensor control module feedgas (diesel). Nitrogen oxide sensor control module midbed (diesel). Nitrogen oxide sensor control module tailpipe (diesel). Particulate matter sensor (diesel). |
| 36 | 10A | Fuel volume control value (diesel). Fuel pressure regulator (diesel). Transmission control module (diesel). |
| 37 | - | Not used. |
| 38 | - | Not used. |
| 39 | - | Not used. |
| 41 | 30A | Trailer brake control module. |
| 43 | 30A | Upfitter spare. |
| 45 | - | Not used. |
| 46 | 10A | A/C clutch solenoid. |
| 47 | 40A | Upfitter relay 1. |
| 48 | 20A | Upfitter run and accessory feed. |
| 49 | 30A | Pump electronics module (gas). Fuel pump (diesel). |
| 50 | 15A | Injector power (gas). |
| 51 | 20A | Power point #1. |
| 52 | - | Not used. |
| 53 | 30A | Trailer tow park lamp. |
| 54 | - | Not used. |
| 55 | 20A | Upfitter relay 3. |
| 56 | - | Not used. |
| 58 | 5A | USB power. |
| 59 | 10A | U-Haul parking lamps. |
| 60 | 10A | Dual fuel tank selector switch (diesel). |
| 61 | - | Not used. |
| 62 | - | Not used. |
| 63 | 20A | Driver seat compressor. |
| 64 | 20A | Passenger seat compressor. |
| 65 | 10A | Upfitter - run activate feed. |
| 66 | 10A | Four pack solenoid differen-tial lock. |
| 67 | 10A | Hydromax relay power. |
| 69 | - | Not used. |
| 70 | 40A | Inverter. |
| 71 | 30A | Anti-lock brake system valves. |
| 72 | 10A | Brake on-off switch (hydraulic brakes). Stoplamp air pressure switch 1 and 2 (air brakes). |
| 73 | - | Not used. |
| 74 | 15A | Heated mirror. |
| 75 | - | Not used. |
| 76 | 60A | Body control module battery feed. |
| 77 | 30A | Body control module voltage quality monitor power feed. |
| 78 | - | Not used. |
| 79 | 5A | Hydromax pump monitor. |
| 80 | 10A | Trailer tow backup signal. |
| 81 | - | Not used. |
| 82 | 5A | Upfitter switch (factory location for ignition power). |
| 83 | 5A | Upfitter switch (optional location for power at all times). |
| 84 | - | Not used. |
| 85 | - | Not used. |
| 86 | - | Not used. |
| 87 | - | Not used. |
| 88 | 10A | Cargo lamps. |
| 89 | 20A | Urea tank heater. |
| 91 | 40A | Upfitter - B-pillar. |
| 93 | - | Not used. |
| 94 | - | Not used. |
| 95 | 20A | Stoplamps. Trailer tow stoplamps. |
| 96 | 20A | Urea line heater. |
| 97 | - | Not used. |
| 98 | 30A | Trailer tow battery charge. |
| 99 | 40A | Upfitter relay 2. |
| 100 | 20A | Urea valves. |
| 101 | - | Not used. |
| 102 | - | Not used. |
| 103 | - | Not used. |
| 104 | - | Not used. |
| 105 | 15A | Trailer tow stoplamp and turn relay. |