Cadillac 60 Series 1963 Shop Manual page 364

ELECTRICAL SYSTEM
12-83
Power Relay Unit
Phototube Unit
For Instrument Panel
Wiring Harnes
\
\
\
\ \ l _ Z L _ H o l d Adjustment
Fuse \ \ ! .
/ \ ^Dim Adjustment
\
Foot Switch
f'i
Amplifier Unit
Fig. 12-99 Guide-Matic Components
an adjustment is n e c e s s a r y . The following
troubles may be reported.
a. Headlights switch to lower beam when an
approaching car is too close, or will not switch to
lower beam at all.
b. Headlights switch to lower beam when an
approaching car is too far away
0
c. Headlights will not return to upper beam
when no car or other lights are ahead.
d. Headlights return to upper beam when ap-
proaching car switches to lower beam.
e. Headlights switch rapidly back and forth
between upper and lower beam.
While these complaints may be corrected in
most cases by aiming, and by hold and sensitivity
adjustments, a few preliminary tests should be
made to determine if the condition is more
serious.
With car in a lighted area, check as follows:
1. Pull light switch knob to full ON position.
After a few seconds warm-up time, lights should
remain on lower beam, regardless of position of
foot switch.
2. Depress override section of foot switch.
Headlights should change to upper beam if foot
switch is in Automatic position. If not, ratchet
foot switch and again depress override section.
Lights should change to upper beam. When over-
ride section of foot switch is released, headlights
should return to lower beam.
3. Cover phototube unit with your hand or a
black cloth. If foot switch is in Automatic posi-
tion, headlights should switch to upper beam.
When hand or cloth is removed, headlights should
switch back to lower beam.
Fig. 12-100 Sensitivity Control Knob