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Wire Color Code Poster
All three major wire color standards in one printable reference chart.
Wire Color Code Reference
IEC 60757 | SAE J1128 | MIL-STD-681
IEC 60757
European / International
BlackBK
Neutral (N)
BrownBN
Phase (L1)
RedRD
Phase (L2)
OrangeOG
Phase (L3)
YellowYE
Foreign voltage warning
GreenGN
Low voltage DC
BlueBU
Neutral (N) / DC negative
VioletVT
ELV systems
GreyGY
Phase (L3 alt)
WhiteWH
Signal/data
PinkPK
Switched phase
TurquoiseTQ
Low voltage DC
Green-YellowGNYE
Earth (PE) - MANDATORY
SAE J1128
Automotive (North America)
BlackBLK
Ground
BrownBRN
Tail/park lamps
RedRED
Power (battery+)
OrangeORN
Accessory circuits
YellowYEL
Left turn / hazard
GreenGRN
Right turn
BlueBLU
High beam
VioletVIO
Backup lights
GrayGRY
Trailer brakes
WhiteWHT
Ground return
PinkPNK
Fuel gauge
TanTAN
Parking brake
Light GreenLT GRN
Charge indicator
MIL-STD-681
Aerospace / Military
0
BlackBLK
1
BrownBRN
2
RedRED
3
OrangeORN
4
YellowYEL
5
GreenGRN
6
BlueBLU
7
VioletVIO
8
GrayGRY
9
WhiteWHT
W
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About This Poster
IEC 60757
International standard used in Europe, Asia, and most countries outside North America. Uses two-letter abbreviations.
SAE J1128
Society of Automotive Engineers standard for automotive primary wire used in North American vehicles.
MIL-STD-681
Military standard for aerospace wire identification. Each color represents a digit (0-9) for wire numbering.
Learn More About Each Standard
Managing Complex Wire Harnesses?
WireIt tracks wire colors, generates BOMs with part numbers, and keeps standards references near your design data.
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