The role of the automobile wiring harness in the vehicle is to transmit or exchange the power signal or data signal of the electrical system to realize the functions and requirements of the electrical system. It is the main body of the automobile circuit network, and there is no automobile circuit without the wiring harness.

　　 The design process and manufacturing process of automotive wiring harnesses are relatively complicated, requiring the wiring harness engineers to be careful and careful, and not to be sloppy. If the wiring harness is not well designed and the functions of each part cannot be organically combined, the wiring harness may become a frequent link of car failures. Below, automotive wiring harness manufacturers briefly talk about the specific process of automotive wiring harness design and manufacturing.

 

1. First, the electrical layout engineer of the automobile wiring harness manufacturer provides the functions of the vehicle electrical system, electrical loads and related special requirements. The state of the electrical device, the installation location, and the form in which the wiring harness and the electrical device are connected.

　　Second, according to the electrical functions and requirements provided by the electrical layout engineer, the electrical schematic diagram and circuit diagram of the whole vehicle can be drawn.

　　 Three, according to the electric principle circle carries on the energy distribution to each electric sub-system and the circuit, including the power supply grounding wire, and the distribution of the grounding point.

 

Fourth, according to the distribution of the electrical components of each subsystem, determine the wiring form of the wiring harness, the electrical components connected to each wiring harness and the direction on the car; determine the outer protection form of the wiring harness and the protection of the vias; determine the fuse according to the electrical load Or circuit breaker; then determine the wire diameter according to the amount of the fuse or circuit breaker; determine the wire color of the wire according to the function of the electrical device and the relevant standards; determine the terminal and the protection on the wire harness that are connected to it according to the connector of the electrical device itself The model of the set.