Car Wiring Harness

Car wiring harness color codes by country

The car wiring harness is like the blood of a car, and its function is complex. During assembly and maintenance, it is necessary to identify the colors of the wires in the harness. The colors have specific rules and meanings. Today, I have compiled a list of the car wiring harness color codes by country for you.

American car wiring harness color code

AbbreviationEnglishAbbreviationEnglish
BkBlackBuBlue
BNBrownCRClear
Dk BuDark BlueDk GNDark Green
GNGreenGYGray
LT BuLight BlueLT GNLight Green
OGOrangePkPink
PLPurpleRDRed
TNTanVIViolet
WTWhiteYLYellow

European automotive wiring harness color codes

AbbreviationEnglishAbbreviationEnglish
BLBlueBRBrown
ELGreamGEYellow
GNGreenGRGray
MMaroonNFNeutral
OGOrangeRSPink
RTRedSWBlack
VIVioletWSWhite
HBLLight BlueHGNLight Green

Japanese car wiring harness color code

AbbreviationEnglishAbbreviationEnglish
BBlackWWhite
RRedGGreen
LBlueYYellow
LGLight GreenBRBrown
OROrangePPink
PuPurpleGYGray
SBSky Blue

China car wiring harness color code

AbbreviationEnglishAbbreviationEnglish
BBlackOOrange
WWhiteYYellow
GrGrayGGreen
BrBrownBlBlue
RRedVViolet

FAQ

1, How do I identify the wires in my automotive wiring harness?

The easiest way to identify wires in an automotive wiring harness is to look for a color code. The code is usually printed on the insulation of the wire. If you cannot see the color code, you can use a multimeter to measure the voltage or resistance of the wire.

2, Can I modify the existing wiring without adhering to the car wiring harness color code?

It is highly recommended to follow the wire harness color code when modifying existing wiring. Doing so ensures:

  • Ease of Maintenance: Technicians can quickly identify and trace wires, making maintenance and repairs easier.
  • Easy Troubleshooting: Using a consistent color code makes it easier to identify and resolve wire problems.
  • Easy to modify in the future: With consistent wire color codes, making changes to existing wiring is more straightforward.

3, Is there a difference between GM and Ford wiring color codes?

Yes, there is a difference between GM and Ford wiring color codes. Each automaker typically uses its unique color codes for wiring systems in their vehicles. While there may be some similarities, such as both using black for ground wires, there can be variations in color coding for different circuits and components. It is important to refer specifically to the wiring diagram or documentation for a particular vehicle to ensure accurate identification and connection of wires.