Automotive wiring harness design process and manufacturing process

The role of the automotive wiring harness in the vehicle is to transfer 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 automotive circuit, and there is no wiring in the absence of a wiring harness. The design process and manufacturing process of automotive wiring harnesses are more complicated, requiring wire harness engineers to be careful and careful, and not to be sloppy. If the wiring harness is not well designed and cannot combine the functions of each part, it is possible to make the wiring harness a frequent part of the automobile failure.

First, the electrical layout engineer first provides the functions, electrical loads and related special requirements of the vehicle electrical system. The state of the electrical device, the mounting location, the form in which the harness is docked with the electrical device.

Second, the automotive wiring harness manufacturer said that according to the electrical functions and requirements provided by the electrical layout engineer, the electrical schematic and circuit diagram of the vehicle can be drawn.

Third, according to the electrical principle circle for each electrical subsystem and circuit energy distribution, including the grounding of the power supply, and the distribution of grounding points.

Fourth, according to the distribution of electrical components of each subsystem, determine the wiring form of the harness, the electrical components connected to each harness and the direction on the vehicle; determine the external protection form of the harness and the protection of the via; determine the fuse according to the electrical load Or circuit breaker; then determine the wire diameter of the wire according to the amount of the fuse or the circuit breaker; according to the function of the electrical device, determine the wire color of the wire according to relevant standards; determine the terminal and the wire to be connected to the wire harness according to the connector of the electrical device itself The model number of the set.

Fifth, the automotive wire harness manufacturers said to draw two-dimensional wire harness map and three-dimensional wire harness layout.
Sixth, according to the approved three-dimensional wire harness layout diagram, the two-dimensional wire harness diagram is checked, and the two-dimensional wire harness diagram can be printed accurately. After approval, it can be trial-produced and produced according to the wire harness diagram.