Buick LeSabre 1965 Service Manual page 621

ELECTRICAL SYSTEMS
INTERIOR LIGHTS 1 0 - 5 1
bulb which operates in conjunction
with the tail lights, and its cir-
cuit is also protected by the 10
ampere "TAIL LTS." fuse on the
fuse block.
The lamp bulb may be replaced
by removing the lamp lens.
d. Back-up Lamps and Switch
Back-up lamps are located in the
rear bumper. They contain 32
CP bulbs behind clear plastic
lenses.
The back-up light switch is com-
bined with the neutral safety
switch. It is mounted on the
steering column jacket under the
instrument panel. The switch is
actuated by a lever on the trans-
mission control shaft which pro-
jects through a slot in the jacket.
When the neutral safety portion
of the switch is correctly timed,
the back-up portion is properly
timed a u t o m a t i c a l l y . Slotted
mounting screw h o l e s permit
sidewise movement of the switch
for proper timing. See subpara-
graph e for the adjusting pro-
cedure for the neutral safety and
back-up light switch. The back-
up light circuit is protected by
the 10 ampere "BACK-UP" fuse
on the fuse block.
On 4-speed synchromesh trans-
mission cars, the back-up light
switch is mounted on the side
cover of the transmission. The
switch is actuated by a small
diameter rod connected to the
reverse shift lever. Switch timing
can be changed, if necessary, by
bending the rod. See Figure
10-53.
e. Neutral Safety Switch
Adjustment
Check and adjust neutral safety
switch as follows:
1. Check shift control linkage and
adjust if necessary.
2. Place shift control lever in
Park position.
3. Insert a 3/32" drill or a piece
of 3/32" drill rod through gauging
M O V E NEUTRAL
SAFETY SWITCH SO
DRILL IS PARALLEL
ITH JACKET
Figure 10-54—Checking Neutral
Safety Switch Adjustment
hole in operating l e v e r and
through gauging hole in switch
body. See Figure 10-54.
4. If gauging drill or drill rod is
now parallel with centerline of
steering column jacket, neutral
safety switch timing is OK. If
gauging drill will not go through
holes or is not parallel, loosen
two switch mounting screws and
move switch sidewise until gauge
is p a r a l l e l . Then retighten
screws.
5. To recheck adjustment, turn
on ignition switch, place shift
control lever in reverse, and
make sure back-up lights are lit.
Set parking brake, place shift
lever in Neutral and make sure
engine will start. Then place shift
lever in Park and try starting
engine again. Engine must not
start in Drive or Reverse.
1 0 - 4 4 INTERIOR LIGHTS
AND CIGAR
LIGHTERS
NOTE: See paragraph 10-5 for
lamp bulb and fuse specifications.
a. Instrument Panel Lights
The speedometer, heater-defrost-
er controls, ventilation or air
c o n d i t i o n e r controls, trans-
mission control dial, ignition
switch key slot, clock and ash
tray a r e illuminated by lamp
bulbs mounted to provide indirect
lighting.
The instrument panel lights are
controlled by the lighting switch
as described in paragraph 10-41
and the circuits are protected by
the 3 ampere "PANEL LTS."
fuse on the fuse block.
To replace an instrument cluster
bulb, remove the socket and bulb
assembly from the instrument
cluster by rotating counterclock-
wise. Replace the bulb and re-
install the assembly by rotating
it clockwise.
b. Parking Brake Warning
Light
The parking brake warning light
w i l l show a red w a r n i n g
"BRAKE" signal light in the in-
strument cluster whenever the ig-
nition switch is turned on while
the parking brake is applied. The
signal lamp is controlled by a
switch mounted in position to be
operated by the parking brake
lever. The circuit is protected by
the 7.5 ampere "BK. & BZ." fuse
on the fuse block under cowl.
When brake lever is in fully re-
leased position, the signal switch
plunger must be depressed 3/16"
to open the circuit. Adjustment
is made by loosening the mounting
screw and shifting the switch as
permitted by the slotted screw
hole. To replace bulb it is nec-
essary to reach under instrument
panel and pull light socket as-
sembly from cluster.
c. Direction Signal
Indicator Lights
The direction signal indicator
consists of a 2 CP bulb mounted
at each end of the instrument
cluster.
d. Automatic Transmission
Control Dial Light
The control dial in the instrument
panel is illuminated by a 2 CP
lamp bulb mounted in the cluster
to provide indirect lighting. The
light intensity is controlled by the