FOREWORD
ELECTRIC WIRE CODE
00-16
WA500-3H
12
00
ELECTRIC WIRE CODE
In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires. This wire code table will
help you understand WIRING DIAGRAMS.
Example:
05WB indicates a cable having a nominal number 05 and white coating with black stripe.
00
CLASSIFICATION BY THICKNESS
00
CLASSIFICATION BY COLOR AND CODE
Nominal num-
ber
Copper wire
Cable O.D.
(mm)
Current rat-
ing (A)
Applicable circuit
Number of
strands
Dia. Of strand
(mm)
Cross section
(mm)
0.85
11
0.32
0.88
2.4
12
Starting, lighting, signal etc.
2
26
0.32
2.09
3.1
20
Lighting, signal etc.
5
65
0.32
5.23
4.6
37
Charging and signal
15
84
0.45
13.36
7.0
59
Starting (Glow plug)
40
85
0.80
42.73
11.4
135
Starting
60
127
0.80
63.84
13.6
178
Starting
100
217
0.80
109.1
17.6
230
Starting
Priority
Circuits
Classi-
fication
Charging
Ground
Starting
Lighting
Instrument
Signal
Other
1
Pr
im
ar
y
Code
W
B
B
R
Y
G
L
Color
White
Black
Black
Red
Yellow
Green
Blue
2
Au
xiliary
Code
WR
—
BW
RW
YR
GW
LW
Color
White &
Red
—
Black &
White
Red &
White
Yellow &
Red
Green &
White
Blue &
White
3
Code
WB
—
BY
RB
YB
GR
LR
Color
White &
Black
—
Black & Yel-
low
Red & Black
Yellow &
Black
Green &
Red
Blue & Red
4
Code
WL
—
BR
RY
YG
GY
LY
Color
White &
Blue
—
Black & Red
Red & Yel-
low
Yellow &
Green
Green &
Yellow
Blue & Yel-
low
5
Code
WG
—
—
RG
YL
GB
LB
Color
White &
Green
—
—
Red &
Green
Yellow &
Blue
Green &
Black
Blue &
Black
6
Code
—
—
—
RL
YW
GL
—
Color
—
—
—
Red & Blue
Yellow &
White
Green &
Blue
—
