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 |