Components of the wire harness

What is the composition of the wiring harness? What does the wiring harness consist of? In order to facilitate installation and maintenance and ensure that the electrical equipment can work under the worst conditions, the wires of different specifications and colors used by the electrical equipment of the whole vehicle are reasonably arranged and integrated, and the wires are bundled with insulating materials, which is complete and reliable. Normal selection of wire sectional area and color code: 1. Correct selection of wire sectional area The electrical equipment on the vehicle selects the sectional area of the wire used according to the load current. 60% of the actual current carrying capacity of the wire can be used for the electrical equipment working for a long time; 60% -100% of the actual current carrying capacity of the wire can be used for the electrical equipment working for a short time. Selection of wire color code for 2、 In order to facilitate identification and maintenance, different colors are used for the wires in the wire harness. For the convenience of marking in the circuit diagram, the color of the conductor is represented by letters, and the color represented by the letter is noted in each circuit diagram.

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The common fault causes of the wiring harness are as follows: 1. The natural damage of the wiring harness exceeds the service life, resulting in the aging of the wires, the rupture of the insulation layer, the significant decrease of the mechanical strength, the short circuit, the open circuit and the grounding between the wires, and the burning of the wiring harness. 2、 the damage of wiring harness caused by the failure of electrical equipment, when the electrical equipment has overload, short circuit, grounding and other faults, it may cause the damage of wiring harness. When assembling or repairing automobile parts due to man-made faults of 3、, the wire harness is crushed by metal objects, so that the insulation layer of the wire harness is broken; the positive and negative leads of the battery are connected reversely; when repairing circuit faults, the wire harness is connected and cut randomly, which can cause abnormal operation of electrical equipment.

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