The power supply equipment, electrical equipment and monitoring equipment on the tractor are connected by switches, wires, relays and fuses according to their respective working characteristics and internal relations, forming a complete whole and forming the overall circuit of the whole vehicle.

It is of great significance to be familiar with and master the internal relationship between general circuits and electrical appliances, and to understand the circuit diagram for correctly using and maintaining electrical equipment, and for analyzing, testing and troubleshooting electrical equipment failures.

Tractors expressed concern.

In order to simplify, standardize and apply the tractor circuit diagram, there are circuit diagram, schematic diagram and harness diagram. The circuit diagram is based on the actual position of electrical equipment on tractors and cars, and connects all electrical equipment one by one with wires.

A circuit diagram of a complete circuit is formed. Referring to this circuit diagram, it is easy to find the faults in the car, which is suitable for expressing some system circuits and simple vehicle circuits.

The schematic diagram is a circuit diagram drawn by organically combining various systems on the tractor with standardized graphic symbols according to the circuit principle. This Tu Tu surface is clear, simple and clear, and the relationship between circuit connection and control is clear, which helps to understand the circuit principle.