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2
3
Fig. 3-76.
Buzzer
l
.
Co ntacts
2.
A
rm
ature
3.
Co
il
The buzzer is p laced under the dashboard on the left-
ha nd side a nd is
conn
ected between the
,
f usebox (via
the ign ition
)
and the door
switoh
on the driver's
side.
The b uzzer co nsists of a pa ir of co ntacts a nd a co i!.
Wh
e
n
curre nt passes across
th
e contads and through
the
coil, th
e a
rm
a ture is dra
wn down
towa
rd
s
th
e
core
of th
e
coil. Whil
e t.he
a
rmat
t
ure is be
in
g d
rawn
down towa
rds
t,he co re,
the contacts c
ut out the
curre
nt
and th
e
armaofure springs back,
e
tc. This cycle is
·re-
peate
d continuously as long a
s
cu'rrent is switch ed on,
that is, a
s
long a
s
the driver's door is open and th
e
ignition
ke
y
is
in the ignition
.
HORN
The horn
IS
mounte
d on the support irons
for
the
front
bumpe
r.
One of the horns has a low frequency and the other
a high frequency_
The horns can be
engag'
e d via a controi relay by the
horn ring mounted inside the steering wheel.
WINDSHIELD WIPERS
The windshield wipers are driven by an
e
lectric
motor.
The
motor is
conne'
o ted to the wiper blades by means
of link arms. The motor, which has a permanently
magnetized .field, has two speeds which are selected
by means of the switch mounted on the dashboard
.
The motor is fifWed with 3 brushes, one negative
brush and two positive brushes. The positive hrushes
are connected up one at a time for full and half
speed respectively. The gear housing for the wiper
unit contains an integrally built parking switch. The
3
: 32
I'
.....---------.-.
_._.
_.
-
'l
I
L ._.
53b
53
+
-------1:::=-::~..JJL
31b
I
.J
53a
VOLVO
103355
Fig, 3-71. Wiring diagram for windshield wiper motor
purpose of this
switch
is to
return the
b lades to a
suitable, previous
ly determined, parking position ir-
respective of where the blades are when
shut
off.
See Fig. 3-77.
WINDSHI'ELD WASHER
Th
e
wind shi
e ld was
her, whi ch
is
pl
aced o
n
the left-
hand
w hed
arch,
is drive
n by an
e le
ctric
mo tor. The
pump located
a
t th
e
bottom of
the water container
is connected
t
o
the
moto
r
by mean
s
of
a shaft.
The
pump is of
t he
centrifugal type.
Turning
the
windshield wash
e
r switch moun ted on the
dashboard engages the
windshie
ld
washer.
SWITCHES
All switches are of the pull -pu sh type. The
switches
for
lighting,
ve
ntilation and rear window defroster have
three positions. The switch for the
windshi,
e ld wiper
has also three positions but the
washe'
r is also en
-
gaged by
t
urning the knob on this
switch.
Th
e
switch
for the warning signal
flashers
and fog lights have two
position
s.
INTERIOR LlGHTING
The interior lighting consists of a lam p located in the
middle of t.he roof. The lamp is switched on by mean
s
of a
swit
t ch built into the
light.
The switch has
thre'
e
positions. In ,its fi.rst position, the light is switch ed off
completely, in the seoond position the lig.ht is on when
any of the front doors is opened, and in the third
position the light is on continuously.
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