If a good wire harness is not tightened during wiring, it will have poor contact and heat generation. If the motor coil at the terminal is not fixed when going out, it may also generate heat. During the processing of electronic wire beams, due to dust and oil pollution, the creepage distance is often insufficient, and then the short circuit will burn the motor. If the surface of the wire harness is oxidized, it may increase the resistance of the contact area.
The storage environment of the complete wiring harness can be controlled or not. In a hot, humid or corrosive environment, the service life of the wire harness will be greatly affected. In the transportation environment, due to the corresponding vehicles, mechanical equipment and loading and unloading tools, vibration and collisions will occur. Because some harsh environments will further aggravate the vibration.