Bulb Specifications; Body Electrical System Trouble Diagnosis And Corrections - Datsun 620 Series 1977 Service Manual

Body
Electrical
System
BULB
SPECIFICATIONS
Item
Wattage
Candlepower
Headlamp
Inner
Outer
37 5W
37 5 S0W
Front combination
lamp
Turn
signal and parking lamp
23 8W 32 3C
Side marker
lamp
Front
Rear
8W
4C
8W 4C
Rear combination
lamp
Turn
signal lamp
A B
Tail
lamp B
C
Stop lamp
A
B
Back up lamp D
A 23W
32C
B
23j8W
32j3C
C 8W 4C
D 23W
32C
7 SW
6C
License plate lamp
Engine compartment
lamp
6W
Room
lamp
5W
Combination
meter
illurnina
tion
17W iC
x3
Knob illumination lamp
3 4W
2C
Heater control
illumination
lamp
3 4 W
2C
TROUBLEDIAGNOSE AND
CORRECTIONS
HEADLAMP
Condition
Headlarnps
do
not
light
for
both
high
and low beams
High beam
cannot
be
switched
to
low
beam
or
vice
versa
Probable
cause
Burnt fuse
Loose connection
or
open circuit
Faulty lighting
switch
Faulty
dimmer switch
Faulty light relay
No
ground
Faulty
dimmer switch
Faulty light relay
BE12
Bulb
SAE trade number
4001
4002
1034
67
67
1073
1034
67
1073
89
161
158
158
Corrective action
Correct
cause
and replace fuse
Check wiring
and
or
repair
connection
Conduct continuity
test
and
replace
if
neces
sary
Check light relay for proper operation
and
replace
if
necessary
Clean and
tighten ground
terminal
Conduct continuity
test
and
replace
if
neces
sary
Check light relay for proper operation
and
replace
if
necessary