CHRYSLER SERVICE MANUAL ELECTRICAL SYSTEM—29
d. Tolerances (No. 1 units)
(a) A vertical tolerance of it 2" will be
tolerated.
(b) A horizontal tolerance of =fc 6" will be
tolerated.
The lower beam of the No. 2 unit will be
aimed so that the top edge of the high intensity
portion of the pattern is aimed at the level of
the lamp center and the left edge of the high
intensity portion of the pattern is aimed
straight ahead.
e. Tolerances (No. 2 unit)
(a) A vertical tolerance of =fc 2" will be
tolerated.
(b) A horizontal tolerance of 6" to the right
will be tolerated.
Upon aiming the lower beam of the No. 2
unit, the upper beam of the No. 2 unit will be
automatically aimed.
58x216
Fig.
31-Headhght Aiming Tool Adapters
HORIZONTAL AIMING CORD
t $ t •(* i ; t
Fig.
32-Aiming Outer Headlights
58x215
Fig.
33—Aiming Inner Headlights
L Adjusting Headlights Using Tool C-3552
Headlight may be adjusted by using Tool C-
3552.
Refer to Figs. 31, 32 and 33. Use aiming
tool according to manufacturers recommenda-
tions.
49.
TESTING VOLTAGE AT HEADLIGHTS
One of factors affecting lighting efficiency is
loss of voltage to light bulbs due to high re-
sistance in circuit. Headlight voltage must be
measured with lights burning and battery in
fully-charged condition.
Remove headlight rim and, with Sealed-Beam
unit partially removed from its mounting seat,
attach leads of reliable voltmeter to prongs of
Sealed-Beam unit while it is still inserted in
connector socket. With Sealed-Beam unit in its
correct position, top prong supplies current for
low (traffic) beam. One of the side prongs sup-
plies current for high beam and the other is
ground connection.
With only lights burning, engine warmed up
and running at speed equivalent to car speed
of about 20 m.p.h., voltage at headlights should
be not less than 13.25 volts, or more than 14.5
volts (with battery and generator at room tem-
perature, approximately 70 degrees F.). If
voltage is low at either headlight socket (with
only standard equipment in the circuit), pro-
ceed as follows:
Test voltage output of battery which should
be 12 to 12.5 volts. Clean and tighten battery
terminals and ground cable. Check wires and
connections to all lights, and check main head-
light switch and dimmer switch for high resist-
ance.
When voltmeter is placed between ground
and input side of switch and then between
ground and output side of switch (with
lights burning), difference in readings will
represent the voltage drop in switch. The same
method may be used in checking voltage drop
in wires by taking reading at each end of wire.
A switch showing voltage drop of more than
one-tenth of a volt, or wire showing a voltage
drop of one-tenth of a volt should be replaced.
If any wire in lighting circuit has been re-
placed with other than standard equipment
wire,
it may lack capacity and cause voltage
drop.
The most important wire in entire pri-
mary circuit is wire that is connected from
starter switch to ammeter, because it must
carry full load of all branching circuits.
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