Chevrolet 70 1969 Series, Shop Manual

Page: 515 / 913

CHASSIS ELECTRICAL A N D INSTRUMENTS 12-16
5. Install steering shaft upper bearing sleeve,
then install steering wheel as directed under "Steer­
ing Wheel Replacement" in "M E C H A N IC A L S T E E R ­
IN G ” (SEC. 9A) of this manual.
HAZARD W A R N IN G SYSTEM
All vehicles are equipped with a hazard warn­
ing or disability lighting system to be operated
when on-the-road disability occurs. This system is
fed from the battery and can be operated regard­
less of ignition or control switch position.
N O T E : Refer to applicable wiring diagram
for wiring arrangement.
A switch mounted on side of the-directional
signal control housing or on the instrument panel
operates front and rear directional signal lights
simultaneously. When hazard warning or disability
lights are operating, the directional signal tell-tale
lights or a light inside the switch knob will flash.
To cancel or "turn-off” the lights, pull plunger out
or depress the knob.
If switch becomes inoperative, check for a
blown fuse or a weakflasher. If this fails to correct
the condition, replace the hazard warning or dis­
ability lighting switch. The hazard warning switch
shown in figure 20 may be replaced as explained
under "Directional Signal Control Assembly” pre­
viously. To replace the dash mounted type switch,
remove the knob, then remove nut attaching switch
to dash panel. Pull switch from dashpaneland dis­
connect wiring harness. Install new switch.
N O T E : On models which have an indicator
bulb in the switch knob, the bulb may be replaced
by removing the threaded knob.
FLASHERS
Two or three prong specific load or variable
load flashers are used in the directional and hazard
warning system on vehicles covered by this man­
ual. Refer to "Specifications" at end of this section
for type of flasher and trade number.
On vehicles equipped with the specific load
flasher, the tell-tale will not operate if one direc­
tional lamp bulb is taken out of the circuit.
On vehicles equipped with the variable load
flasher, the directional tell-tale will operate even
though one or more of the indicator bulbs are taken
out of the circuit.
IM P O R T A N T : On vehicles equipped with the
variable load flasher, each lamp bulb should be
checked periodically for proper operation.
SPECIFICATIONS
HORN RELAY
M o d el....................................................... 2480982
ST A R T E R IN T ER LO C K RELAY
Model ..................................................... 1115848
Point Opening (In .).................................... 0.017— 0.033
Opening Voltage (Range)................................... 3.7— 5.2
LOW A IR P R E SSU R E OR V ACU U M
A L A R M BUZZER
M od el....................................................... 1116882
Point Opening (In .)............................................ 0.017
Closing Voltage................................... Adjust to Buzz At
0.25— 0.35 Ampere
At 13.5-14.5 Volts.
EN G IN E A LA R M BUZZER
M odel........................................... ............1116914
Point Opening (In .)............................................ 0.015
Closing Voltage................................... Adjust to Buzz At
0.30— 0.35 Ampere At
13.5-14.5 Volts.
FLA SH ER U NIT
Specific Load......................................... Sig. Stat— 144
Specific Load......................................... Sig. Stat— 113
Variable Load........................................ Sig. Stat— 175
Variable Load........................................ Sig. Stat— 180
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK S H O P M A N U A L