Page 361
ILLUMINATION OF CONTROL SWITCHES AND
HEATER CONTROLS
Changing bulbs
General
The control switches are illuminated by a light bulb located between two refractors in the instrument panel
above the switches. The refractors, which are made of
acrylic plastic, have recesses in line with each switch, the
depth of the recess increasing with distance from the
bulb. Light rays striking such a recess are refracted 90°
to illuminate the switch through a hole in the panel.
The heater controls are illuminated in the same way.
The control switch light bulb is located below the speedometer and can be reached after removal of the screen on
the instrument side under the instrument panel. The
heater control light bulb can be reached by removing the
plastic cover inside the glove compartment.
CHANGING THE HEATER CONTROL LIGHT BULB
1
2
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S3140
CONTROL SWITCH ILLUMINATION
(SCHEMATIC)
1. Bulb
2. Refractor
3. Control switch
4. Instrument panel
SAMS
351-9
Page 362
DIRECTION INDICATORS
SELF-CANCELING MECHANISM OF DIRECTION
INDICATOR CONTROL LEVER
GENERAL
The direction indicators consist of flashing lights at front
and rear. The front ones are combined with the parking
lights and flash with an orange light. The rear direction
indicators have separate bulbs which also flash with an
orange light.
The flasher unit is mounted under the instrument panel
and is combined with a control relay which flashes a green
light on the instrument to indicate that the direction indicators are on and that both front and rear lights are flash·
ing.
If either light is not working, this can be detected by failure of the indicator lamp to flash and by a faster rate of
flashing in the light that is still intact. The rate of flashing
is 60-120 per minute when the flasher unit is in normal
condition and bulbs of the right power are installed. The
flasher unit cannot be adjusted. If other components
(switch, wiring and bulbs) are normal, the cause of an abnormal flashing rate lies in the flasher unit, which should
then be exchanged.
NOTE
The flasher will work at abnormal speed if bulbs of
the wrong power are fitted.
361-1
WEI
The play between the actuator and the "tooth" of the
(0.2-0.6 mm) when the
lever should be 0.008-0.024"
lever is in neutral. Adjust the clearance by placing spacer
washers between the lever and its mounting bracket.
NOTE
The actuator must be so placed that its centerline
coincides with the centerline of the control lever
housing when the front wheels are lined up fore-and-
aft.
Page 363
HORNS AND HORN CONTROLS
Removal and installation, sporty-version steering wheel,
up to and incl. model 1977
GENERAL
Carefully pry up the horn contact outer ring with the
aid of a small screwdriver. Install the contact by pressing
down the outer ring until the contact comes in position.
The horns are of the loud-tone type, and are a combination of one high and one low note horn.
One horn is mounted in the engine compartment on the
outside of the left, inner bumper bracket. The other is
on the outside, underneath the bumper.
HORN CONTROL
The horns are operated by buttons in the steering wheel
safety padding.
Removing and installing
Remove the safety pad with horn contact from the steering wheel by undoing the four screws, which are accessible
from the underside of the wheel.
Disconnect the two cable ends to the horn contact from
the back side of the safety pad and remove the contact
from the safety pad. (Only earlier design.)
When removing the slip ring, the steering wheel must first
be removed (see Group 6).
$5611
HORN CONTACT, SAAB 99 EMS, UP TO AND INCL. MODEL
1977
Install in the reverse order.
Removal and installation, sporty-version steering wheel,
as from model 1978
Lift ofhhe safety padding and horn contact and disconnect the two cables.
$4025
HORN CONTACT, EARLIER DESIGN
HORN CONTACT, SPORTY-VERSION STEERING WHEEL,
AS FROM MODEL 1978
r
Install in the reverse order.
HORN CONTACT,.LATER
DESIGN
Montering sker i omvi:ind ordning.
SAftB
362-1
Page 364
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HORN CONTROL, EARLIER
1. Horn contact
2. Contact finger
3. Steering wheel
4. Slip ring
!5.Fuse, 8 amp
6. Horns
7. Spacer
362-2
SA.t\EI
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S 5176
DESIGN
Page 365
6
6
5
HORN CONTACT, L ATER DESIGN
1_ Horn contact
2 Contact finger
3:
Steering wheel
4. Slip ring
5. Fuse, 8 amp
6. Horns
7. Spacer
362-3
Page 367
WINDSHIELD WIPERS AND WASHERS
GENERAL
The windshield wiper motor is located on the right side
of the dash panel. The movement is transmitted from
the motor gear housing via a reciprocating flexible cable
to gears attached to the wiper spindles. The cable runs
in a steel tube between the wiper motor and the two
spindles.
The motor is equipped with a self-parking device so that
the wiper blades always come to rest at the bottom of
the windshield no matter what position they are in when
the motor is switched off.
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S 3992
WINDSHIELD WIPERS
WINDSHIELD
WIPER MOTOR
Function
In the wiper motor, the drive is transmitted to the flexible cable through a gear housing. The motor is fed from
the battery through the ignition contact and via a fuse,
the switch and a contact device in the gear housing. This
last is in action throughout the greater part of the blade
stroke, giving the motor two alternative grounding routes
while the wiper switch is on. Each time the blades reach
the limit of travel at which they are normally parked, the
contact in the gear housing breaks. If the switch is off
when this happens, the motor and blades come to rest
in that position.
Lubrication
The rotor of the wiper motor is journaled in self-lubricating bearings, and the gear housing is packed with grease
at the factory. Regular lubrication is not necessary.
363-1
Page 368
Removal
Installation
1. Remove the wiper arms from the wiper spindles.
2. Remove the nut that holds the steel tube to the wiper
motor.
3. Release the wiper motor and remove the motor and
the flexible cable. (Pull the cable out of the tube.)
1. Mount the spindle housings on the dash panel plate
with the rubber bushings, washers and nuts. Do not
tighten the nuts.
2. Guide the tubes into their positions between the spindle housings and their base plates.
3. Insert the flexible cable while twisting to facilitate
meshing and check that it runs smoothly.
4. Tighten the spindle nuts.
5. Mount the wiper motor on the dash panel and connect it to the steel tube.
6. Test run the wipers and note on which side the spindles rest when the motor is switched off. (This test
is made to prevent the wiper arm from moving in the
wrong direction when the wiper motor is switched on.)
7. Fit the wiper arms.
WINDSHIELD WASHER, HEADLIGHT WASHER
The washer equipment consists of a liquid container
mounted in front of the right-hand wheel housing and
an electric pump, mounted in front of the container.
The suction side of the pump is connected to the container by means of a hose. A hose runs from the outlet
side of the pump and this divides to run to the nozzle in
the hood for the windshield, and to the grille for the
headlights. A non-return valve is fitted in the hose to the
hood to prevent the hose from emptying when the pump
is not operating.
REMOVAL OF WIPER MOTOR AND FLEXIBLE CABLE
Installation
1. Guide the wiper motor's flexible cable into the tube
while twisting the tube so that the gears on the spindles mesh with the cable.
2. Mount the wiper motor on the dash panel and connect it to the steel tube.
3. Test run the wipers and note on which side the spindles rest when the motor is switched. off. (This test is
made to prevent the wiper arm from moving in the
wrong direction when the wiper motor is switched on.)
4. Fit the wiper arms.
WIPER MECHANISM
Removal
1. Remove the wiper arms and the wiper motor.
2. Undo the base plates on the spindle housings with a
3/8" wrench so the tubes can be detached from the
spindle housings.
3. Undo the retaining nuts on the top of the dash panel
and remove the spindle housings. Put the washer and
rubber bushings in a safe place.
363-2
SA.Ml
Page 369
HEADLIGHT WIPER AND
WASHER
ELECTRIC WIRING AND OPERATION
Cnntrnl
GENERAL
IAVAr in n<>11tr:,I (O)
When the ignition is switched on, current is supplied to
terminal 53a of the wiper motor. The motor goes to the
parking position when a spring-loaded contact device in
the motor breaks the circuit between terminals 53a and
53. The contact device stops the motor very quickly by
cutting in terminal 31 band thereby shorting out the rotor
windings. This arrangement is necessary in order to stop
the motor during the short time the contact is actuated
by the cam; otherwise the motor would continue to run
after being switched off, especially when blade resistance
is low and the voltage across the motor is high.
Cars destined for certain markets are equipped with a
headlight cleaning system. This consists of a wiper and
washer unit powered by separate electric motors which
are operated by the same control lever as the windshield
wipers and washer.
Control lever at 1
HEADLIGHT
Current is supplied to the windshield wiper motor only
(low speed) via terminals 54 and 53 of the control switch.
At the same time the circuit is broken between terminal
31b and ground in the switch to prevent shorting when
the contact device in the motor makes the circuit between terminals 53 and 31b.
WIPER MECHANISM
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Switch
S 3886
WIRING
DIAGRAM,
HEADLIGHT
WIPER AND WASHER
r
363-3
Page 370
Control lever at 2
ELECTRIC WIRING AND OPERATION, SAAB 99 GLE
Current is supplied to the windshield wiper motor (high
speed) via terminals 54 and 53b of the switch. At the
c,amo timo, th<> rnil in th<! rnl;:iv is 1rneroised bv terminal
S of the switch, whereupon the relay closes and current
flows to the headlight wiper motor via terminals 88 and
88a.
Control lever in neutral (0)
When the ignition is switched on, current is applied to
terminal 53a of the headlight wiper motor and to terminal
4 of the windshield wiper motor. The motors go to the
parking position when a spring-loaded contact device in
each motor breaks the circuit between terminals 53a and
53, and 4 and 2, respectively. The contact device stops
the motors very quickly by cutting in terminal 31 band
thereby shorting out the rotor windings. This arrangement is necessary in order to stop tt-e motors during the
short time the contact is actuated by the cam; otherwise
the motors would continue to run after being switched
off, especially when blade resistance is low and the voltage
across the motors high.
Control lever at 3
The same functions operate here as in position 2, but the
switch now grounds terminal 54c, thereby starting the
pump motor.
Control lever at 4
When the control lever is pulled back towards the steering
wheel, it trips a spring-loaded contact that starts the pump
motor and headlight wipers by grounding terminals 54c
and S.
+
31
M
+
31b
53a
co·ntrol lever at 1 (intermittent operation)
Current is supplied to the intermittent operation relay
termina~ 15b via terminal 53a on the switch and the intermittent operation terminal. The current is supplied
intermittently from terminal 31 bs on the relay toterminal 5 on the wiper motor via terminals 31 b and 53
on the switch. After each period in operation, the wipers
return to the parking position when the circuit between
terminals 4 and 2 on the wiper motor is broken.
+
Motor,
windshield
wiper
Motor,
headlight
wiper
53
3A
SA
Pump
motor
Relay, headlight wiper
motor
Interval relay
windshield wiper
S 5579
WIRING DIAGRAM,
SAAB 99 GLE
363-4
HEADLIGHT
SA4'11
---
WIPER AND WASHER,