The Color Standard of Automobile Wiring Harness and the Meaning of the Wiring Harness Code

1.Noun term
Monochrome wire: A wire with a single color on the insulated surface.
Two-color wire: A wire with two-color insulation on the surface.
Main color: The color with a large area ratio in the two-color wire.
Auxiliary color: The color with a small area ratio in the two-color wire.
2.The color and code of the wire
Black BLK/B
Light Green LT GRN
Blue BLU/BL
Orange ORG/ O
Brown BRN/BR
Pink PNK/P
Clear CLR/CL
Purple PPL/PP
Dark Blue DK BLU
Red RED/R
Dark Green DK GRN
Tan TAN/T
Green GRN/G
Violet VIO/ V
Gray GRY/ GR
White WHT/W
Light Blue LT BLU
Yellow YEL/Y

3.The composition of wire color
The choice of wire color should give priority to single-color, and then use two-color.
4.The ground wire
The ground wire of various automotive electrical appliances should use black wire, and the black wire has no other purpose except for grounding.
5.Marking of wire color
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".
6. Conductor cross-sectional area
The cross-sectional area of the wire is selected according to the size of the working current. For some electrical appliances with particularly small currents, such as indicator light circuits, in order to ensure the due mechanical strength, the cross-sectional area of the wire should not be less than 0.5mm2.
The cross-sectional area of the wire is marked in front of the color code, and it is not marked when the unit is millimeters. For example: 1.25R means a red wire with a cross-sectional area of 1.25mm2; 1.0G/Y means a two-color wire with a cross-sectional area of 1.0 mm2. The main color is green, secondary color is yellow.
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