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(365)
ELECTRICAL SYSTEMS
SIGNAL SYSTEMS
10-89
POINT
OPENING
figure I O-116-Relay Contact Point Adjustment
3.
With armature free, check contact point
opening,
using feeler
gauges.
Point
opening
sh
ould
be
.025".
Adjust opening to .025" , if
nec
essary, by bending
the upper armature stop.
See
figure
10-116.
4. Connect the positive terminal of a 6-volt
battery
to
the
battery (middle) terminal of
horn relay.
5.
Using a
va
r iable
rheostat
of 10 ohms
minimum and a
capacity
of 2
amperes,
connect
one lead to the negative post of battery. Set
rheostat to
provide
full
resistance, then
connect
the other lead to the "S" terminal of relay.
6. Connect a 6-volt test lamp betw.een neg-
ative post of battery and the "R" terminal of
relay.
7. Connect positive lead of low reading
voltmeter to the battery (middle) terminal of
horn relay and connect negative lead of volt-
meter
to the
"S"
terminal of relay.
8.
Slowly
decrease
resistance until the test
lamp lights, note the voltmeter reading, then
turn rheostat to full resistance. Closing voltage
should be 2.75 to 4 volts.
9. If closing
voltage
is not within specified
limits,
bend the
armature
spring post as re-
quired. Bend down to increase closing voltage
or bend up to decrease closing voltage. See
figure 10-117.
10. After proper closing voltage is obtained,
install relay cover. Install relay on car and
connect wires as shown in wiring circuit dia-
gram in Section 1 O-J.
ARMATUR
E
SPR
ING
POST
(BEND DO W N TO IN CREAS E
OR UP
T
O DECR
EASE
CLOSING
VOLTAGE)
Figure
I O-Ill-Adjustment of Horn Relay Closing Voltage
10-62 DIRECTION SIGNAL LAMPS AND
SWITCH
a. Direction Signal Lamps and Indicators
The direction signal lamps are in
corporated
in the front parking lamps and
the
r
ear
com-
bination tail, stop and signal
lamps.
In 1948
mod
els,
the r
ear
lamps
are provided
with sepa-
rate
signal light bulbs whi ch
operate indepen-
dently
of
the
t
ail
and sto p light bulbs. In 1949
S
eri es
50-70,
one 21-3
CP bulb is
used
in each
lamp
; the 3
CP filament
provides the
tail light
and the 21 CP filament
provides
both
the
stop
light and
the
signal
light.
Wh
en
the ignition switch is turned on and
the direction signal switch is manually oper-
ated to indicate a turn, the front and rear sig-
nal lights flash on and off on
the
side of car for
which a turn is
indicated.
The flashing of sig-
nal lights is caused by a Tungsol flash
er
which
is connected into the proper signal light circuit
by contacts made in
the direction
signal switch
when switch is set for a
turn.
If
the brakes are applied at the same time
the signal switch is set for a turn, two separate
stop lights will burn steadily on the 1948
models. On 1949 Series 50-70 however, the 21
CP lamp filament will flash on side for which
turn is indicated while
the
opposite 21 CP lamp
filament will burn
steadily
to provide the stop
light.
When the direction signal lights are flashing,
a signal indicator bulb on instrument panel
also flashes, producing a small arrow of green
light to indicate the direction for which the
signal has been set. For a left turn the green
light flashes in the left side of the charge indi-
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