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What is a car wiring harness?

The automobile wiring harness is the network main body of the automobile circuit. Without the wiring harness, there would be no automobile circuit. At present, whether it is a high-end luxury car or an economical ordinary car, whether it is a simple wiring harness or a complex wiring harness, the form is generally similar, and they are all composed of wires, connectors, protective sleeves and positioning parts.

They play the role of connection and power supply, ensuring the normal operation of the vehicle and the normal operation of various electronic devices. Automobile wiring harness has various functions. First of all, it plays the role of connecting electrical equipment. In the engine compartment of the car, various sensors, motors and electronic control modules need to be connected through wiring harnesses to achieve information transmission and interaction.

Secondly, the wiring harness is also responsible for transmitting power signals and providing power support for various systems, such as ignition systems, lighting systems, air conditioning systems, etc. Most importantly, the wiring harness can also prevent damage to the wires caused by friction, vibration or moisture, improving the stability and safety of the vehicle.

Thread colors in automotive wiring harnesses

Thread colors in automotive wiring harnesses

Wire color: In order to facilitate the maintenance of automobile electrical systems, low-voltage wires are usually distinguished by different colors. The color of the wire insulation layer used today is generally two-color, consisting of a primary color and a secondary color. The main color is the base color of the wire, and the secondary color is the axial stripe color stripe on the wire. Commonly used colors are red, yellow, blue, green, black, white, brown, purple, gray, etc.