Isuzu N-Series. Service manual — part 1074
8-8 CAB AND CHASSIS ELECTRICAL
If the wire does not belong in a conduit or other har-
ness covering, tape the wire again. Use a winding
motion to cover the first piece of tape.
Symbols and Abbreviations
Symbols
Symbol
Meaning of Symbol
Fuse
Fusible link
Fusible link wire
Switch
N8A0022E
N8A5501E
N8A5502E
N8A5503E
N8A5504E
Switch
Switch
(Normal close type)
Contact wiring
Battery
Diode
Electronic Parts
Resistor
Symbol
Meaning of Symbol
N8A5505E
N8A5506E
N8A5507E
N8A5508E
N8A5509E
N8A5510E
N8A5511E
CAB AND CHASSIS ELECTRICAL 8-9
Speaker
Buzzer
Circuit breaker
Bulb
Double filament bulb
Motor
Variable register Rheo-
stat
Symbol
Meaning of Symbol
N8A5512E
N8A5513E
N8A5514E
N8A5515E
N8A5516E
N8A5517E
N8A5518E
Coil (inductor), solenoid,
magnetic valve
Relay
Connector
Light emitting diode
Reed switch
Condenser
Horn
Symbol
Meaning of Symbol
N8A5519E
N8A5520E
N8A5521E
N8A5522E
N8A5523E
N8A5524E
N8A5525E
8-10 CAB AND CHASSIS ELECTRICAL
Abbreviations
Vacuum switching valve
Symbol
Meaning of Symbol
N8A5526E
Abbreviation
Meaning of Abbreviation
Abbreviation
Meaning of Abbreviation
A
Ampere (S)
kW
kilowatt
ABS
Anti-lock brake system
LH
Left hand
ASM
Assembly
LWB
Long wheel base
AC
Alternating current
M/T
Manual transmission
A/C
Air conditioner
OD
Over drive
ACC
Accessories
OPT
Option
C/B
Circuit breaker
QOS
Quick on start
CSD
Cold start device
RH
Right hand
DIS
Direct ignition system
RR
Rear
EBCM
Electronic brake control module
RWAL
Rear wheel anti-lock brake system
ECGI
Electronic control gasoline injection
ST
Start
ECM
Electronic control module
STD
Standard
ECU
Electronic control unit
SW
Switch
EFE
Early fuel evaporation
SWB
Short wheel base
4X4
Four-wheel drive
V
Volt
FL
Fusible link
VSV
Vacuum switching valve
FRT
Front
W
Watt (S)
H/L
Headlight
WOT
Wide open throttle
IC
Integrated circuit
W/
With
IG
Ignition
W/O
Without
CAB AND CHASSIS ELECTRICAL 8-11
Parts for Electrical Circuit
Wiring
Wire Color
All wires have color-coded insulation.
Wires belonging to a system's main harness will have a
single color. Wires belonging to a system's subcircuits
will have a colored stripe. Striped wires use the following
code to show wire size and colors.
Abbreviations are used to indicate wire color within a cir-
cuit diagram.
Refer to the following table.
Wire Color Coding
Distinction of Circuit by Wire Base Color
Wire Size
The size of wire used in a circuit is determined by the
amount of current (amperage), the length of the circuit,
and the voltage drop allowed. The following wire size
and load capacity, shown below, are specified by AWG
(American Wire Gauge) (Nominal size means approxi-
mate cross sectional area).
N8A5023E
Color-Coding
Meaning
Color-Coding
Meaning
B
Black
BR
Brown
W
White
LG
Light green
R
Red
GR
Grey
G
Green
P
Pink
Y
Yellow
LB
Light blue
L
Blue
V
Violet
O
Orange
Base color
Circuits
Base color
Circuits
B
Starter circuit
Y
Instrument circuit
W
Charging circuit
L, O, BR,
LG, GR,
P, LB, V
Other circuit
R
Lighting circuit
G
Signal circuits
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