Howo Truck Diagram - Electrical Junction Box
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| K9 | 15# Power 1 Relay |
| K11 | Exhaust Brake Relay |
| K19 | 15# power 2 relay |
| F5 | Air dryer insurance |
| F6 | Seat heating insurance |
| F7 | 15# backup power insurance |
| F9 | Main car ABS insurance |
| F15 | Main power switch fuse |
| F16 | Exhaust brake insurance |
| F19 | Main car ABS insurance |
| F20 | Trailer ABS Insurance |
| F21 | Combination switch fuse |
| F22 | Odometer Sensor Insurance |
| F23 | VDR/Magnetic Fan Insurance |
| F24 | Meter power fuse |
| F25 | Meter power fuse |
| F26 | Cigarette lighter insurance |
| F27 | CBCU-G1 Insurance |
| F28 | CBCU-G2 Insurance |
| F29 | CBCU-G3 Insurance |
| F30 | CBCU-G4 Insurance |
| R6 | Electric heated seat |
| Q | 15# backup power interface |
| R1 | Cigarette lighter |
| R11 | Air dryer |
| S9 | Exhaust brake switch |
| Y6 | Exhaust Brake Solenoid Valve |
| Y7 | Electromagnetic fan |
| S52 | Clutch switch |
| SW2 | Stop switch under the vehicle |
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