Sinotruk Electrical Diagram - Position Light, Headlamps & Auxiliary High Beams

| E1 | Left rear position light | 
| E2 | Right rear position light | 
| E3a | Left front lighting high beam | 
| E3b | Left front lighting low beam | 
| E4a | Right front lighting high beam | 
| E4b | Right front lighting low beam | 
| E5 | Left front position light | 
| E6 | Right front position light | 
| E25L,R | Left and right side marker lights of tractor | 
| E30 | Ashtray light | 
| E40 | Left auxiliary high beam | 
| E41 | Right auxiliary high beam | 
| A | Position light | 
| B | Headlamps and auxiliary high beams | 
| 1 | Battery negative | 
| 41 | Ground point on the left side of the cab | 
| 42 | Grounding point in the middle of the cab | 
| 43 | Grounding point on the right side of the cab |