Opel Frontera UE. Manual - part 468

8D–12

WIRING SYSTEM

Abbreviations

Abbreviation

Meaning of Abbreviation

A

Ampere (S)

ABS

Anti-lock brake system

ASM

Assembly

AC

Alternating current

A/C

Air conditioner

ACC

Accessories

A/T

Automatic transmission

C/B

Circuit breaker

CSD

Cold start device

DIS

Direct ignition system

EBCM

Electronic brake control module

ECGI

Electronic control gasoline injection

ECM

Engine control module

ECU

Electronic control unit

EFE

Early fuel evaporation

EGR

Exhaust gas recirculation

4A/T

4-speed automatic transmission

4WD

Four-wheel drive

FL

Fusible link

FRT

Front

H/L

Headlight

IC

Integrated circuit

IG

Ignition

Abbreviation

Meaning of Abbreviation

kW

Kilowatt

LH

Left hand

LWB

Long wheel base

M/T

Manual transmission

OD

Over drive

OPT

Option

PCM

Powertrain control module

QOS

Quick on start

RH

Right hand

RR

Rear

SDM

Sensing and diagnostic module

SRS

Supplemental restraint system

ST

Start

STD

Standard

SW

Switch

SWB

Short wheel base

3A/T

3-speed automatic transmission

V

Volt

VSV

Vacuum switching valve

W

Watt (S)

WOT

Wide open throttle

W/

With

W/O

Without

8D–13

WIRING SYSTEM

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 (1). Wires belonging to a system’s subcircuits
will have a colored stripe (2). Striped wires use the
following code to show wire size and colors.

F08RW001

D08RW150

Wiring – Wire Color Coding
Abbreviations are used to indicate wire color within a
circuit diagram.
Refer to the following table.

Color–coding

Meaning

B

Black

W

White

R

Red

G

Green

Y

Yellow

L

Blue

O

Orange

BR

Brown

LG

Light green

GR

Grey

P

Pink

LB

Light blue

V

Violet

8D–14

WIRING SYSTEM

Wiring – 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
approximate cross sectional area (1).)

D08RW151

Wiring – Wire Size Table

Nominal size

Cross sectional area

(mm

@

)

Outside diameter

(mm)

Allowable current (A)

AWG size 

(cross reference)

0.3

0.372

1.5

9

22

0.5

0.563

1.7

12

20

0.85

0.885

1.9

16

18

1.25

1.287

2.2

21

16

2

2.091

2.7

28

14

3

3.296

3.6

37.5

12

5

5.227

4.4

53

10

8

7.952

5.5

67

8

15

13.36

7.0

75

6

20

20.61

8.2

97

4

8D–15

WIRING SYSTEM

Fuse
Fuses are the most common form of circuit protection
used in vehicle wiring. A fuse is a thin piece of wire or strip
of metal encased in a glass it or plastic housing. It is wired
in series with the circuit in protects. When there is an
overload of current in a circuit, such as a short of a
ground, the metal strip is designed to burn out and
interrupt the flow of current. This prevents a surge of high
current from reaching and damaging other components in
the circuit.
Determine the cause of the overloaded before replacing
the fuse.
The replacement fuse must have the same amperage
specification as the original fuse.
Never replace a blown fuse with a fuse of a different
amperage specification.
Doing so can result in an electrical fire or other serious
circuit damage. A blown fuse is easily identified as shown
in the figure.

810RX001