Howo Truck Electric Diagram - Rocker Switch & Horn Button

| S48 | Horn button on steering wheel |
| S49 | Horn button on steering wheel |
| S6/6 | PTO switch |
| S6/7 | PTO neutral switch |
| S6/8 | Wheel differential switch |
| S6/9 | Axle differential switch |
| S6/10 | All-wheel drive switch |
| S6/11 | Work light switch |
| S6/19 | Lifting axle lift switch |
| X10 | Rocker switch lighting positive and negative splitter |
| X11 | Rocker switch lighting positive and negative splitter |
| T1 | Lifting axle mode conversion connector |
| S6/38 | Brake cooling switch |
| Y8 | Brake cooling solenoid valve |
| S6/43 | Headlight work light switch |
| K4 | Headlight working light relay |
| K12 | Work light relay |
| E23 | Working lamp |