Howo Truck Diagram - Standard & Extended Cab Electrical Equipment

| E15L,R | Left and right interior lights |
| E18 | Central interior lighting |
| E7L,M,R | Left, middle and right front gallery lights |
| E68L,R | Left and right sleeper reading lights |
| X85/1,2 | Splitter |
| S16,S17 | Left and right door light switch |
| A12 | Radio |
| H10 | Overvoltage alarm device |
| B14 | left front speaker |
| B15 | Right front speaker |
| E10,E12 | Left and right front turn signals |
| E54,E55 | Left and right rear turn signals |
| A | Standard and extended cab electrical equipment |
| B | 70-mining truck cab electrical equipment |
| C | Overvoltage alarm device |
| D | Turn signal light |