Jeep UNIVERSAL CJ-2A - Page 145

B
ELECTRICAL SYSTEM
connect the ga u ge to a new fuel tank sending uni t
whi ch has been grounded to the vehicle. If the gaug e
registers inc orrec tly when operating the new uni t,
repla ce th e gauge; if correctly, replace th e sendin g
uni t.
Should a new fuel t ank uni t no t be available for
testing, use a 6- or 12-volt test ligh t in its pla ce.
Wne n the gauge is operating co rr ectly, the poin te r
will mov e approximatel y three-quar te rs across the
dia l.
On some vehicles, th e tempera t ur e gauge m ay
register on or close to the H (hot ) m ark wh en
coolant te m perature is 190°F . to 200°F. [88°C. a
93 °C .]. In such cases, a 25-ohm, !- wat t resis tor
ma y be installed on the temper at ur e gauge whi ch
will place the point er just beyond the center m ark
at a cool ant temperature of 19 0°F. to 200°F. Ins tall
the re s istor between the two ter mina ls on the back
of th e gaug e. Insulat e the exposed leads of th e
resis tor wi th electrical tap e.
If th e oil pre ssur e indi cator does n ot indicat e cor -
rect ly , first check the ligh t bulb. Nex t check all
connections and lea d wires. If , after all possible
defe cts ar e cor re cted , the indica tor light does no t
go on and off pro perly , then the diaphragm type
swit ch in t he cylinder block should be replac ed .
1-66. LIGHTING SYSTEM
The wirin g of the lighting systems is shown in
the wiring diag ra ms , which indicate the various
uni ts in relation to their positions in the vehicle.
Th e wires in th e various circ uits are of different
colors
or are marked by trace rs to aid when che ck-
ing individua l circuits .
T
he lighting circuits of all models are protected by
an overload circuit breaker mounted on the bac k
of the main ligh t switch and no replaceable fuse is
requir ed.
Th e upper and lower headlight beams are con -
trolled by a fo ot sw i tch l ocated on the toe board
to the left of the clutch peda l.
1-67. Main Light Switch - Early CJ - 2A
Th e first type M odel CJ -2 A switch , used in produ c-
tion through serial No. 10252 is shown in Fig. 161.
To remove the switch from the instrum ent panel
it is first necessary to remove the switch control
bu tton and shaft. Th e shaf t is retained in the
switch housing by a snap ring. To remove the shaf t
compress the snap sprin g by pressing agains t it
with a sharp tool th rou gh hole in h ous in g.
6
}4 4
FIG. 1 61 - MAIN LIGHT SWITCH -
EARLY MODEL CJ-2A
I - To Ammeter
2-To Parkin g Lighta
3-To Headl amps through Dimmer Sw itch
4-<:0<>trol H andle Re taining Snap Ring
5-To Rear Li~th ts
6- To Dash ond Stoplight Switches al so Hea ter
or other Acceuories
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R efer to wirin g diag ra m an d to the switc h illust ra-
tion w hen making ins tallation.
1 -6 8. M ain Light Switc h
e Late CJ-2A , CJ-3A, CJ-3B , CJ-5, CJ- 6, DJ-3 A
Thi s swit ch is a du al functioning unit havin g two
push-pu ll positio ns and a rotary a ction. Whe n
pu lled ou t to the first position, the front parkin g
and tai l lights are turned on. Wh en pulled all th e
wa y ou t to the seco nd position , the headlights and
tai l lights are t urne d on. Rota t in g the switch to
the right dims the instrument cluste r lighting .
The swi tch may be removed from the instrumen t
panel by first loosening th e set sc re w in the contro l
knob and removing the kn ob. The re tai nin g nu t
ma y th en be removed and the swit ch remove d
through the r ear of the i ns tr umen t pan el.
Th e ligh t switch shown in Fig. 162 was supersede d
by the one s hown in Fig. 163 for models CJ-3B ,
D
J- 3A, C J-5, CJ- 6.
F I G. 1 62- MAIN LIGHT SWITCH
L ate CJ-2A, All CJ- 3A,
Earl y Cj-3B, DJ- 3A . CJ -5 , CJ-6
FIG. 163- MAIN LIGHT SWITCH
Lat e Cj-3B, Dj-3A, CJ-5, CJ-6
1-69. Stop Light Switch
T he stop light switch is of the diaphragm type and
is l ocated in the front en d of the mas ter brake
cylinder. Should the switch become inop er ative , it
is necessary to install a new on e. Fig. 164 shows
the wiring of th e stop light cir cui t.
FIG. 164- STOP LI GHT CIRCUIT
1-Sto p Light Switch
2- Li ght Switc h
3- Tail Li ght
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