1, the use of wire harness is too long, the wire aging, leading to rupture of insulation, mechanical strength decreased significantly, the wires appear between the open circuit, short circuit, ground and so on, so that the wire bundle burnout;
2, automotive wiring harness terminal deformation, oxidation, resulting in poor contact, etc., can cause electrical equipment can not work properly. Damage to the wiring harness due to electrical equipment failure;
3, when the electrical equipment overload, short circuit, ground and other faults may cause damage to the wiring harness.
When assembling or servicing automobile parts, metal objects crush the wiring harness and rupture the insulation of the wiring harness. The lead position of the electrical equipment is incorrectly connected. The wiring harness is in an improper position. The positive and negative leads of the battery are reversed.
The main body of the automotive circuit is the wiring harness of the car, connecting the car's electrical and electronic components and make it work. Car audio wiring harness is made of wire, plug-ins and package tape, it must ensure that the transmission of electrical signals, while ensuring the reliability of the connection circuit, to prevent electromagnetic interference to the surrounding circuits, and to exclude the short circuit condition.