JCB 4CX – fuse box diagram
Year of production:
Fuse box
The relays and fuses are located in the side console underneath the cover.
| No. |
A |
Function |
| Column “A” | ||
| 1 | 10 | Hydraulic auxiliary |
| 2 | 5 | Fuel pump solenoid (engine stop) |
| 3 | 7.5 | Direction indicators |
| 4 | 7.5 | Steer mode proximity switch |
| 5 | 10 | Gearbox control, Transmission |
| 6 | 3 | Gear select / Forward Reverse (machines from serial No. 933757) |
| 7 | 5 | Brake lights (machines up to serial No. 933756) |
| 7 | 10 | Transmission (machines from serial No. 933757) |
| 8 | 3 | 4 wheel drive (automatic brakes) (machines up to serial No. 933756) |
| 8 | 7.5 | Brake lights (machines from serial No. 933757) |
| 9 | 5 | Left hand side lights |
| 10 | 5 | Right hand side lights |
| Column “B” | ||
| 1 | 5 | Instruments, Buzzer |
| 2 | 15 | Front horn, Front washer/wiper |
| 3 | 7.5 | Rear horn |
| 4 | 15 | Heated seat, Cigar lighter, Face level fan |
| 5 | 10 | Rear wiper/wash |
| 6 | 10 | Brake switch |
| 7 | 5 | Return to dig enable |
| 8 | 25 | Rear working lights |
| 9 | 20 | Headlights |
| 10 | 25 | Front working lights |
| Column “C” | ||
| 1 | 7.5 | Lights |
| 2 | 15 | Hazard light |
| 3 | 10 | Beacon, Interior light |
| 4 | 5 | Radio |
| 5 | 20 | Thermostart |
| 6 | 30 | Heater |
| 7 | 3 | Ignition relay coils |
| 8 | 15 | Main beam |
| 9 | 3 | Fog light |
| 10 | 15 | Dip beam |
| Relays | ||
| 1 | Ignition 1 | |
| 2 | Hammer | |
| 3 | Auxiliary (jaw bucket) | |
| 4 | Main lights | |
| 5 | Engine run | |
| 6 | Hydraulic speed control (HSC) | |
| 7 | Buzzer | |
| 8 | Buzzer | |
| 9 | Ignition 2 | |
| 10 | Front working lights | |
| 11 | Rear working lights | |
| 12 | Direction indicator | |
| 13 | Neutral start | |
| 14 | Rear horn | |
| 15 | Parking brake warning light | |
| 16 | Air conditioning compressor | |
| 17 | Parking brake | |
| No. |
Relays |
| FD1 | Forward HI/LO |
| FD2 | Forward |
| FE1 | Reverse HI/LO |
| FE2 | Reverse |
| FF1 | Interlock |
| FF2 | Drive |
| FG1 | Blank |
| FG2 | Transmission dump |
| FH1 | Auto 2WD |
| FH2 | 4WB |
| No. | Relays |
| FG1 | Reverse Alarm |
| FG2 | Transmission dump |
| FH1 | 2WB |
| FH2 | Brake lights |
| No. | A | Function |
| 1 | 30 | Hazard warning lights, Beacon, Lights |
| 2 | 50 | Wash/Wipe, Transmission, Indicators |
| 3 | 50 | Work lights, Fog Lights, Brake lights |
| 4 | 50 | Ignition, Heater, Thermostart |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.