OPEL GT-R 1973 Manual PDF

1 F- 50 1973 OPEL SERVlCE,MANUAL
Installation
1. Connect wiring harness.
2. Replace housing with two (2) screws.
3. Rep&e lens.
Rear RemovalRemove two screws from support bracket aed
remove housing and lens. See Figure lF-10.
,&y...2&L&-i -:,..; 3O’F’OFigure 1 F-10
- Removing Rear Side Marker Lampx
kallationInstall housing and lens with two (2) attach&gSCFSVS.
INTERIOR LIGHTS
Courtesy Light Removal1. Pry courtesy light out of roof frame, as shown in
Figure 1 F-
11.
t2. Pull wires off flat plugs. See Figure lF-12.
Figure lF-12 -Courtesy Light Wire Connections
Installation1. Connect wires to flat plugs, a) red wire, b)
greywire, and c) brown wire.
2. Push light back into roof frame.
Door Jam Switch Removal1. Remove door jam switch
attach’ing screws.
2. Remove switch and disconnect wire.
Installation1. Connect wire to switch.
Figure lF-1 1
- Removing Courtesy LightFigure 1 F-l 3 Removing Parking Light Lens

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2. Install Switch to door jam.
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EXTERlOd LIGHTS. GTLIGHTING SYSTEMSlF- 51
Removing~Parking-Light Housing1.
Remove lamp lens.
2. Remove lamp housing.
3.
Discon$ect electrical wires. See Figure lF-13.
lnstallatioh
1.
Con& electrical wires.2. Install famp housing and lens.
Removal df Front Directional Signal Lamp1.
Remove lamp lens.
2.
Removk lamp housing.
3.
DisconAect electrical wires. See Figure lF-14.Figure
lb14 Removal Front Directional Lamp Lens
Installation1.
Con&t electrical wires.
2. Install lamp housing and lens.
Removal {f Headlamp Sealed Beam1. Rotate fieadlamp to open position.
2.
Remove headlamp shield. See Figure lF-15.3.
Removk headlamp attaching screws and take off
headlamp.; See Figure
lF-16.4. Disconiect electrical wires.
/Installatiot
1. Install headlamp with three (3) attaching screws.
IFigure lF-15 Removing Headlamp Shield
Figure 1 F-16 Removing Headlight Attaching Screws
2. Connect electrical wires.
3. Replace headlamp shield.
Before installation of headlamp shield, adjust head-
lamp for proper aim.
Removal of Rear Directional Signal Lamp. Stop and
Tail Lamp1. Remove lamp lens.

1 F- 52 1973 OPEL SERVICE’MANUAL:
2. Remove lamp housing.
1
3. Disconnect electrical wires. See Figure lF-100.’
Figure 1 F-l 7 Rear Directional Signal. Stop and Tail’LampInstallation1. Connect electrical wires.
2. Install lamp housing and lens.
Removal of Side Marker Lights1. Completely remove adjacent rear directional sig-
nal lamp.
2. Through directional signal
limp opening, tbe
marker lamp assembly can be removed. See
FiguielF-18.
Installation1. Install side marker.
2. Replace directional signal lamp.
Removal of License Plate Lamp1. Remove adjacent tail and directiqnal signal lamp.
2. Through opening remove bumper bolts.
3. Disconnect electrical wires.
4. Remove bumper guard from 6umper.Figure
lF-18 Side Marker Light Location
5. Remove lamp housing. See Figure lF-19.
Figure 1 F-l 9 Removing License Plate Light
1. Install lamp housing.
2. Install bumper guard in bumper.
3. Connect electrical wire.
4. Install bumper bolts.

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LIGHTING SYSTEMSlF- 53
/Removal if Back-Up Lamp1. Remode back-up lens.
2.
Remo+ lamp housing.
3. Discodnect electrical wires. See FigurelF-20
Removal of Headlamp Switch1. Completely remove left headlamp and headlamp
housing.
2. Remove switch from base plate. See Figure lF-21.
Fibure lF-20 Removal of Back-Up Light
Interior djght RemovalI
1. Disco@ect battery.
2. Remohe lens.
3.
RemoF base plate by removing two (2) screws.
4. Unplulg wires.
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InstallationI
1. Connect wires to proper plugs.
2. Install! base plate.
3. Install! lens.
4. Con&t battery.
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,Figure
1 F-2 1 Light Switch Positions
Installation1. Install switch to base plate.
2. Install left headlamp and housing.
Door Jam Switch Removal1. Remove door jam switch attaching screws.
2. Remove switch and disconnect wire.
Installation1. Connect wire to switch.
2. Replace switch on door jam with attaching screw.

lG- 54 1973 OPEL SERVICE’ MANtiAL/SIGNAL SYSTEMSCdNTENTS
9Subject
DESCRIPTION AND OPERAT!ON:
Directional Signal Lever
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HazardWarning
Flasher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BrakeSystemWarningLight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIAGNOSIS:
SignalSystem,.......................
i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MAINTENANCE AND ADJUS,TMENTS:
MAJOR REPAIR:
Directional Signal Switch
:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HornRemoval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Removing Horn Contact
. . . . :.............................................
SPECIFICATIONS:
FuseChart. . . . . . I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page No.
1 G-54
1 G-54
1 G-55
lG-55 _1 G-55
1 G-55
16-551 G-55
1 G-56
DESCRIPTION AND OPERATION
DIRECTIONAL SIGNAL LEVERThe direction signal switch lever is a multi- purpose
lever controlling direction signals, passing signal,
and high and low beams. See Figure
lG-1.301Gl
Figure lG-1 Directional Signal Position for Headlamp
OperationThe direction signal lever is provided with a
two-step mechanism for operation of headlight high and
low beams, and passing signal (not in New Jersey).
With headlights off, moving the lever repeatedly to-
wards steering wheel flashes headlights as a passing
signal. With headlights on, moving the lever repeat-
edly towards steering wheel up to first stop also
flashes passing signal regardless whether or not the
direcl:ion signals are switched on. When the lever is
moved up to the second stop, the headlights are
changed from high to low beam
dr vice versa. On all
Rallye cars, when switching from low to high beam
position, with the fog lamp instrument panel switch
“ON” and ignition switch in “RUN” position, the
fog lights are automatically
switChed off. Direction
signals work in the normal manner; pushing the lever
up for right turn signal and pulling the lever down
for left turn signal.
The horn button is located in the center part of the
steering wheel. The horn is actuated by pushing
down on the ends of both spokes on Opel 1900 andManta’s or on the center horn button on the Rallye.
The button is provided with a spring-loaded plunger.See Figure
lG-2.

Tigure lG-2 Horn Button and Contact
HAZARD; WARNING FLASHER
The hazard warning flasher is operated by the button
on the
toi, of the steering column. When the button
is
press&@ down and released, all four turn signal
lights
WIU flash. To turn the flasher system off, press
down
oni the button and release. When the hazard
warning
hystem is operating, a flashing light in the
iristrumeht cluster will operate. The hazard warning
flasher
&itch is part of the directional signal switch.
BRAKE $YSTEM WARNING LIGHT
The brak; system warning light is located in the left
side of
tpe instrument cluster assembly. The light
will
come on when the brake pedal is depressed and
the ignition is on if there is a hydraulic leak in the
brake system. The light will go out when the foot is
removed!from the brake pedal. The light will also
glow with the parking brake applied and the ignition
on. (On
Iautomatic transmission equipped vehicles,
light is
a! reminder to release parking brake; and on
manual
fransmission equipped vehicles, light glows
when
the clutch pedal needs adjustment,)
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DlAGNfXlS
SIGNAL SYSTEM
The indiLator light on the dash will show defects in
the directional signal system as follows:
1.
Indic One of
tie switched-on directional signal lamp bulbs
is defective. The other signal lamp will continue to
flash.
Thi most common defect is a burned out bulb.
2.
Indicdtor light on dash stays on when directional
signal
leier is switched to either side. Check flasher
unit. I
SIGNAL SYSTEMSlG- 55
MAJOR REPAIR
Removing and Installing Directional Signal Switch
Proceed as outlined in Group 3, Section E.
HORN REMOVAL
1. Remove grille (GT only).
2. Remove horn bracket attaching bolt.
3. Disconnect wires and remove horn.
Installation
1. Install horn with bracket attaching bolt.
2. Connect horn wire.
3. Install grille (GT only).
Removing Horn Contact
1. Disconnect battery.
2. Remove horn cap.
3. Bend lockplate tabs down and remove steering
wheel nut, lockplate, and washer.
4. Mark shaft and wheel hub for reassembly align-
ment.
5. Remove steering wheel using Wheel Puller
J-
21686.
6. Remove horn contact from wheel.
installation
1. Replace horn contact.
2. Before installing steering wheel, lubricate return
pin and slide area on directional signal switch return
cams and contact ring.
3. With steering wheel properly aligned to shaft, in-
stall washer, lockplate, and nut. Torque nut to 15
lb.ft.
4. Bend up lockplate tab and install horn cap.
5. Connect battery.

:lG- 56 1973 OPEL SERVICE MANUAL
I
FUSEqOSlTlON
1
2
3
4
5
6AMPS.
5
5
8
15
15
8ClRClJlT$ PROTECTED
OPEL 1900
& ‘MANTA (51,53,54,57,57R)
LEFT PARkING LIGHT,
LEFTTAIL LIGHT, LEFTSIDE
MARKER LIGHTS
RIGHT PApKING LIGHT, RIGH TAIL LIGHT, RIGHT
SIDE MARKER LIGHTS, INSTRUMENT PANEL LIGHTS,
SHIFT GUADRANT LIGHTS, LICENSE PLATE LIGHT,
FOG LIGHTS (RALLYE ONLY)
IGNITION IKEY
WARNIN BUZZER, TRUNK LIGHT,
HAZARD WARNING FLA,SHER, COURTESY LIGHT, CLOCK
BACKUP L’IGHTS, BLOWER MOTOR, CIGAR LIGHTER; RADIO,
SAFETY BELT WARNING BUZZER AND LIGHT
WINDSHIELD WIPERS, WINDSHIELD WASHER (RALLYE
ONLY), HORN
STOP LIGtiTS,TURN
SlGsNAL AND INDICATOR LIGHT,
PARKING BRAKE WARNING AND BRAKE FAILURE LIGHT,
FUEL GAGE, TEMPERATURE GAGE, OIL PRESSUREINDICATGR LIGHT. CHARGING INDICATOR~LIGHT,
TACHOMETER AND OIL PRESSURE GAGE (RALLYE ONLY)
AIR CONDITIONING
- 20 AMP INLINE F:USE
8
5
16
5OPEL GT
(77)WINDSHIELD WIPERS, WINDSHIELD WASHER, HORN, BACKUP
LIGHT, SP;FETY BELT WARNING BUZZER AND LIGHT
STOP LIGHTS, TURN SIGNAL AND INDICATOR LIGHT,
PARKING BRAKE WARNING LIGHT (AUTOMATIC ONLY),
BRAKE FAILURE WARNING LIGHT, RADIO, TACHOMETER,
OIL PRESiURE GAGE
& INDICATOR LIGHT, FUEL GAGE,
TEMPERATURE GAGE, CHARGING INDICATOR LIGHT
CIGAR LIGHTER, BLOWER MOTORIGNITION~KEY WARNING BUZZER, COURTESY LIGHT, CLOCK,
HAZARD WARNING FLASHER
LEFT PARKING LIGHTS, LEFT TAIL LIGHT, LEFT REAR
SIDE MAdKER LIGHT
RIGHT PA’RKING LIGHTS, RIGHT TAIL LIGHT, RIGHT REAR
SIDE MAdKER LIGHT
INSTRUMENT PANEL LIGHTS, LICENSE PLATE LIGHT.
SHIFT QUADRANT LIGHT
AIR CON,DlTlONlNG
-A/C HAS A 20 AMP INLINE FUSE AND IS
CONNECTED TO THE HOTSIDE OF FUSE NO. 23OlG3

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IINSTRUMENT PANEL
lH- 57
/
/SubjectPage No. INSTRUMENT PANEL
CONTENTS
DESCRIPTION AND OPERATION:
Instrument Panel
- Opel 1900 - Manta. . . . . . . . . . . . . . . . . . . . . .Instrument
Panel-GT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIAGNOSIS:
MAINTENANCE AND ADJUSTMENTS:
MAJOR REPAIR:
Instrument Cluster Housing
- Opel 1900 - Manta . .
Windshield Wiper Switch
. , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .InstrumentCluster
Bulbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .InstrumentCluster
Housing-GT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Combined Switch Assemblies
. . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CigarLighter
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPECIFICATIONS: (Not Applicable)
I H-57
1H-58
1H-59
1H-61
lH-61
1H-61
1H-63
1H-64
DESCF(lPTlON AND OPERATION2. The fog light toggle switch lower half is pushed in.INSTRUFENT PANEL (OPEL 1900. MANTA)
Headligl$ Switch
3. The parking lights and/or low beam headlights are
on.The thr& position light switch controls the head-
lights, @lights, parking lights, side marker lights,
license
plate light and instrument panel lights and is
located
4t the lower left on the instrument panel.
With thk switch knob pulled outward to the first
stop,
thi parking lights, side marker lights, license
plate
ligiit and instrument panel lights will light. Theinstrumdnt panel lights can be turned off by turning
the
lightSwitch knob counterclockwise past the first
detent. IThe fog lights are automatically turned off if the
ignition switch is on and the headlights are on high
beam.
Windshield Wiper Switch
The windshield wiper switch is located on the instru-ment panel to the right of the headlight switch.
By pull&g the lightswitch knob out all the way, the
headlights will also be turned on.
IBy pushing the lower half of this switch in to the first
stop, the wipers will operate at slow speed. By push-ing in to the second stop, the wipers will operate at
fast speed.
Fog
Ligh) Switch (Rallye)The fog
iight toggle switch is located in the instru-
ment cluster to the left of the temperature and fuel
gauge
cl+ster. The fog lights can be turned off at any
time by
t,he toggle switch, but can only be turned on
when: ,
Electrically Heated Rear Window Switch (If
Equipped)The heated rear
wind&v switch is located in the
instrument panel to the right of the clock opening.
1. The ignition switch is on or the engine running.
ITo operate (only possible with the engine running),
push in on the lower half of the switch. When the
rear window is being heated, the switch will
belighted.

1 H- 581973 OPEL SERVICE MANUAL
/-FOG LIGHT SWITCH IRALLYEi
\HEADLIGHT HIGH BEAM INDICATOR
-HAZARD WARNINGFLASHERINDICATORSYSTEM WARN,NGLlGHT
LWINDSHIELD WIPER SWlTCH -1 LFUEL&,UGELHEATER-DEFROSTER CONTROL
CHARGING INDICATOR LlGHTHEATER’ TEMPERATURE CONTROLHEATED REAR GLASS SWITCH1
301H1Figure 1 H-l
- 1900 lnstrumellt Arrangement
INSTRUMENT PANEL
(GT)I
Headlight SwitchesThere are two headlight switches, one for turning on
the headlights and the other operates an indicator
light on the instrument panel. Both switches are
located behind the left headlamp assembly.
When the headlamp lever is @shed forward,’ the
operating mechanism rotates the headlights to open
position, tuins the headlight and instrument panel
indicator light switches on until the headlamps are
locked in full open position at which time the indica-
tar lamp switch is turned off.
Along with the headlights, the headlight switch,also
turns on the parking lights, taillights, license plate
lights and rear side marker lights.
Parking Light and instrument Panel Light SwitCh
AssemblyThe left switch of this assembly is the Parking Light
Switch. By pushing inward on the lower half of thisswitch, the parking lights, taillights, license plate
lights and rear side marker lights are turned on and
can be turned off by pushing inward on the upper
half of the switch providing the headlights are not
turned on.
The center portion of this switch assembly is inopera-
tive and controls nothing.
The switch on the right end of this assembly is the
Instrument Panel Light switch. By pushing inward
on the lower half of the switch turns on the instru-
ment panel lights. The brightness of the instrument
panel lights can be adjusted by movement of the
switch. If either the Parking Light or Instrument
Panel switch becomes defective, the switch assembly
must be replaced.
Combined Windshield Wiper, Electrically Heated
Rear Window and Heater Blower SwitchThis switch assembly is located to the right of the
cigar lighter. If any one of these switches should fail,
the complete switch assembly must be replaced.

/
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IINSTRUMENT PANELlH- 59
Figure 1 H-2
- GT Instrument and Switch Arrangement
The Wihdshield Wipers have two-speed operation.
By pushing the lower half of the switch inward to the
first stop, the wipers will operate at half speed and
by deprbssing to the second stop will provide full
speed oieration. When the switch is returned to the
off posit/on, the wiper blades automatically return to
their park position.
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The El standarFf whether or not the vehicle is equipped with
this optlpn. The engine must be running before
suffi-cient current can be generated to energize this circuit
even th6ugh the switch is depressed to the “ON”
position! When the window is being heated, a warm-
ing light’on the instrument panel will glow. This light
is locate? below the left ventilation inlet.
The
Heiter Blower Switch is a three position switch.
By depressing the lower half of the switch to the first
stop,
th& blower will operate at low speed. Whendepressdd to the second stop, the blower will operate
at high ipeed.
Four Way Hezrerd Warning Flasher SwitchThe
hazard warning flasher switch is located below
the heater controls in the center console. By
depress-ing the lower half of the switch, all four turn- signal
lamps flash at the same time. Although this system
makes use of the regulat turn signal system, it has a
separate feed wire to the switch which allows for its
operation even with the ignition switch and doors
locked. No vehicle should be driven with this system
in operation because of its universal meaning “This
Vehicle Is Not Moving”. To turn the system off,
simply depress the upper half of the switch.
MAJOR REPAIR
Removal of Instrument Cluster Housing Assembly.Opel 1900 Manta
Before starting any instrument panel repair, always
disconnect battery ground cable first.
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