Wire harness is a general term for wire connection of automotive electrical and electronic equipment. It usually consists of positioning components such as cut-off wires, connectors, metal terminals, tapes, and sheaths. Wire harness technology is a standardized process for the production of wire harnesses. Its purpose is to standardize each link in the production process, guide the work of the operators and the management of the production process, including the equipment used in each process, process regulations, process parameters, production standards, etc. The wire harness production process is mainly based on design drawings, technical requirements, technical standards, and technical agreements, combined with the actual production process, and adopts advanced, scientific, reasonable and complete production processes. The quality of these processes is a key condition for companies to manufacture safe, high-quality, high-yield, low-consumption products.  Design principles and processes of automotive wiring harnesses In automotive circuit design, certain principles must be followed. When choosing a wire, be sure to choose a wire that matches the color to avoid misidentification. At the same time, it is necessary to select an appropriate cross-sectional area, and again, connect the wires in the shortest way, and install the wires on both sides of the connector, so as to wire the whole vehicle, which is the basic principle of wiring harness design. In the process of designing the wiring harness, it is necessary to understand the electrical performance of the vehicle in time. After familiarity, draw the electrical circuit diagram, and then design the automotive wiring harness. When designing the automotive wiring harness, it is necessary to make good choices for wires, terminals and connectors. After completing the design of the automobile wiring harness, it is necessary to strictly test the reliability of the vehicle. After passing the inspection, the automobile wiring diagram is drawn, and then the automobile wiring process design is carried out according to the automobile wiring diagram, and then the automobile wiring harness is put into production. If the inspection fails, the automotive wiring harness must be redesigned and additional reliability checks and tests performed after the design is complete.