The wiring harness is not only an integral part of the car, but also an important part connecting the electrical appliances and modules of the whole vehicle, the carrier to ensure the operation of the vehicle’s functions, and the core hardware to ensure the comfort and reliability of the vehicle. With the rapid development of automotive technology and the iterative upgrade of automotive and controller chips, traditional LIN and CAN wiring harnesses can no longer meet the requirements of automotive signal delivery rates. HSD, FAKRA high-frequency plug-ins, and special cables are used and flourish.