Opel Frontera UE. Manual - part 469

8D–16

WIRING SYSTEM

Fusible Link
The fusible link is primarily used to protect circuits where
high amounts of current flow and where it would not be
practical to use a fuse. For example, the starter circuit.
When a current overload occurs, the fusible link melts
open and interrupts the flow of current so as to prevent the
rest of the wiring harness from burning.
Determine the cause of the overload before replacing the
fusible link. the replacement fusible link must have the
same amperage specification as the original fusible link.
Never replace a blown fusible link with fusible link of a
different amperage specification. Doing so can result in
an electrical fire or other serious circuit damage.
A blown fusible link is easily identified as shown in the
figure.

D08RW154

Fusible Link Specifications

Type

Rating

Case Color

Maximum Circuit Current (A)

Connector

30A

Pink

15

Connector

40A

Green

20

Bolted

50A

Red

25

Bolted/Connector

60A

Yellow

30

Bolted

80A

Black

40

Bolted

100A

Blue

50

8D–17

WIRING SYSTEM

Circuit Breaker
The circuit breaker is a protective device designed to
open the circuit when a current load is in excess of rated
breaker capacity. If there is a short or other type of
overload condition in the circuit, the excessive current will
open the circuit between the circuit breaker terminals.
The reset knob (1) pops out when the circuit is open. Push
the reset knob in place to restore the circuit after repairing
it.

D08RW155

Relay
Battery and load location may require that a switch be
placed some distance from either component. This
means a longer wire and a higher voltage drop (1).
The installation of a relay between the battery and the
load reduces the voltage drop (2).
Because the switch controls the relay, amperage through
the switch can be reduced.

D08RW156

8D–18

WIRING SYSTEM

Relay Specifications and Configurations

F00RX012

*

Relay contact shown in the wiring diagram indicates

condition before actuation.

8D–19

WIRING SYSTEM

Diode – Diode Specifications and Configurations

SHAPE

MARK /

COLOR

CONSTRUCTION

CHECKING: THERE SHOULD BE CONTINUITY
IN EITHER A OR B WHEN A CIRCUIT TESTER
IS CONNECTED WITH DIODE TERMINAL

Diode – Maximum Rating (Temp. = 77

°

F (25

°

C)

Items

Rating

Remarks

Peak reverse voltage

400V

Transient peak reverse voltage

500V

Average output current

1.5A

Temp. = 104

°

F (40

°

C)

Working ambient temperature

–22

°

F

∼

176

°

F (–30

°

C

∼

80

°

C)

Storage temperature

–40

°

F

∼

212

°

F (–40

°

C

∼

100

°

C)