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ELECTRICAL SYSTEM
Index to reference numbers shown in Illust.
21A.
No.
Ref.
No.
Description
Description
8
9
10
4
11
12
5
13
6
Cable
-lighting
switch
to headlamp
junction
-violet.
Cable
-key
switch
"BAT"
terminal
to
charge
indicator
"NEa.
II terminal
-
light
green.
Cable assembly.
Charge
indicator
to
magnetic
switch.
Cable
-charge
indicator
lINEa.
II ter-
minal
to regulator
"BA T" terminal-
gray.
Cable
-battery
positive
(+) terminal
to
magnetic
switch.
Cable
-battery
neg.ative
(-) terminal
to
motor
generator
ground
-white.
Cable
-safety
starting
switch
to mag-
netic
switch
-orange
w/black
tracer.
14
Cable
-magnetic
switch
to generator
'IA'I
terminal
-red.
Cable
-safety
starting
switch
to key ig-
nition
switch
"ST"
terminal
-orange.
Cable
-ignition
coil positive
(+) ter-
minal
to key ignition
switch
"IGN"
terminal
-black.Cable
harness.
Cable
-regulator
"GEN"
terminal
to
generator
"A"
terminal
-light
blue.Cable
-ground
junction
to voltage
regu-
lator
base ground
-white
with black
tracer.Cable
-generator
"F"
terminal
to volt-
age regulator
"F"
terminal
-yellow.
STORAGE BATTERY
Keeping
the battery
fully
charged
not only
adds to its life
but makes
it available
for instantuse
when needed.
Battery and Cabl es
Before
working
on any part of the electri-
cal system,
disconnect
the battery
ground
cable
at the battery
negative
(-) terminal.
See
Illust.20. Do not reconnect
this
cable
until
all
work has been completed.
This
will
prevent
shorting
and damage
to any of the electrical
units.
Examine
the electrical
cables
occasion-
ally to be sure
they are not being frayed
by
contact
with
adjacent
parts.
Level
Check the battery at least once a month for
water level.
The electrolyte
(acid and water)
in each
cell
should be at ring
level
at all times
to pre-
vent battery
failure.
When the electrolyte
is
below this
level,
add pure,
distilled
water.
When replacing
a battery,
make
certain
the
ground
cable
is connected
to the negative
(-)
terminal
on the battery.
Be sure the rubber
boot is properly
positioned
over the positive
(+) terminal
on the battery.
Note: Both cables
must be assembled
with the nuts to the inside
of the terminals
to prevent
shorting
against
the pedestal.
Acid
or electrolyte
should never
be added
except
by a skilled
battery
man.
Under no
circumstances
add any special
battery
'Idopes, II
solutions
or powders.
Cleaning and Servicing the Battery
Caution!
Electric
storage
batteries
give
off
highly
inflammable
hydrogen
gas
when
charg-
ing and continue
to do so for
some
time
after
receiving
a steady
charge.
Caution!
Do not under
any circumstances
allow
an electric
spark
or an open
flame
near
the battery.
Do not lay
tools
across
battery
terminals
as this
may
result
in a spark
or
short
circuit
which
may
cause
an explosion.
Be careful
to avoid
spilling
any electrolyte
on hands
or
clothing.
Occasionally
remove
the battery
cables
and
brighten
the terminal
contact
surfaces
with
wire
wool,
and reassemble
them.
Apply a
light
coat of vaseline
or chassis
lubricant.
Be
sure the terminals
are clamped
tightly
and
that the battery
is fastened
securely
in the bat-
tery box.
Replace
unserviceable
cable.
Keep
the vent holes
in the battery
filler
caps open.
For
dependable
battery
service,
see your
International
Harvester
dealer.
22
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