The automobile wiring harness is the main body of the automobile circuit, and there is no automobile circuit without the wiring harness. Wire harness refers to a component that is formed by crimping contact terminals (connectors) made of copper material with wires and cables, and then plasticizing an insulator or adding a metal shell on the outside to form a connected circuit. Automotive wiring harness manufacturers introduce the special meaning of the color codes of automotive wiring harnesses. You certainly don’t know some of them. Let’s take a look:

　　①Professional terms

　　 Monochrome wire: A wire whose insulating surface is one color.

　　 Two-color wire: A wire with two colors on the insulating surface.

　　Main color: The color with a large area ratio in the two-color wire.

　　 Auxiliary color: color with small area ratio in two-color wire.

②Color and code of automobile wiring harness

　　 Thread color commonly used abbreviations Chinese Thread color commonly used abbreviations Chinese

　　Black BLK/B Black Light Green LT GRN Light Green

　　Blue BLU/BL Orange ORG/ O Orange

　　Brown BRN/BR Brown Pink PNK/P Pink

　　Clear CLR/CL Transparent Purple PPL/PP Purple

　　Dark Blue DK BLU Dark Blue Red RED/R Red

　　Dark Green DK GRN Dark Green Tan TAN/T Brown

　　Green GRN/G Green Violet VIO/ V Pink Purple

　　Gray GRY/ GR Gray White WHT//W White

　　 Light Blue LT BLU Yellow YEL/Y Yellow

③The color composition of automobile wiring harness

　　 The color of the wire should be one color first, and then two colors.

　　④Training line

　　A black wire should be used for the grounding wire of various automobile electrical appliances. The black wire has no other purpose except for grounding.

　　⑤The color of automobile wiring harness

　　The color of the wire is indicated by the color code, such as a single-color wire, the color is red, and it is marked as "R";

　　 Two-color wire, the first color is the main color, the second color is the auxiliary color, the main color is red, and the auxiliary color is white, marked as "RW".