What does automotive wiring harness think?

Automotive wiring harness's opinion: First of all, we should clearly know how many wire harnesses there are in the whole vehicle, the name of each wire harness and the actual installation position on the vehicle. Secondly, determine which equipment each branch of the harness leads to, how many wires, colors and labels each branch has, and which terminal they are connected to. Finally, determine which connectors are available and which connectors on the electrical equipment should be connected.

Automobile wires are also called low-voltage wires, which are different from ordinary household wires. Ordinary household wires are copper single-core wires with certain hardness. Automobile wires are all copper multi-core flexible wires, some of which are as thin as hair, and several or even dozens of soft copper wires are wrapped in plastic insulated tubes (PVC), which are relatively soft and not easy to break.

Automotive wiring harness is the network main body of automobile circuit, and there is no automobile circuit without wiring harness. At present, whether it is a luxury car or an economical ordinary car, the form of wiring harness is basically the same, consisting of wires, connectors and packaging belts.

Conductor specifications commonly used in automotive wiring harness include conductors with nominal cross-sectional areas of 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 4.0 and 6.0mm2.. Each wire has an allowable load current value, which is suitable for wires with different power and electrical equipment. Taking the vehicle harness as an example, Line 0.5 is suitable for instrument lights, indicator lights, door lights, ceiling lights, etc. 0.75 specification line is suitable for license plate lights, front and rear small lights, brake lights, etc. 1.0 specification line is suitable for turn signals, fog lights, etc.

1.5 specification line is suitable for headlights, speakers, etc. ; Main power lines such as generator armature wire and grounding wire. 2.5 to 4 square millimeters of wire are required. This just means that for ordinary cars, the key depends on the maximum current value of the load. For example, the ground wire and the positive power cord of the battery are separate automobile special wires, and the wire diameters are relatively large, at least ten square millimeters. These "Big Mac" wires will not merge into the main harness.

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