MG MGB User Manual

Nb
THE
ELECTRICAL SYSTEM
reposasnew-§
t—lb—lt—‘D—l WNr‘P
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
26.
26.
26.
27.
28.
29.
Nb.2
KEY TO THE
WIRING
DIAGRAMS
—
Nos.
1
to
13
(Refer
to
page
Nb.16
for
the key
to
diagrams
No.
14 onwards)
Use
this
one
key
to
identify
components
on
the
wiring diagramsNos.
1
to
13. Refer
to
the appropriate
wiring diagram, and
disregard
any
additional
numbered
items
appearing in the key and
not
on a
particular
diagram.
Description No. Description
No. Description
Alternator
or
dynamo.
30.
RH.
rear
■asher
lamp.
76. Automatic gearbox
gear
selector
illumination
lamp.
Control
box.
31.
L.H.
rear
flasher
lamp.
77. Windscreen
w
sher
um
.
Batteries—6-volt.
32.
Heater
booster
motor
switch.
a
p p
82. Switch iIhimin t‘
n
lam
.
Starter
solenoid.
33.
Heater booster
motor,
or
a 10
P
fresh-air
motor.
95. Tachometer.
Starter
motor.
. .
.
34.
Fuel
gauge.
101. Courtesy
or
map
light
switch.
Lighting
sw1tch.
_
35. Fuel
gauge
tank
unit.
102.
Courtesy
or
map
light.
Headlamp dip
sw1tch.
'
.
,
R H
h
d1
36. Windshield
wiper switch.
115. Heated back-light
.
.
ea
amp.
'
_
H
h d1
37. Windscreen
wiper
motor.
SWltCh
GT only
L.
.
ea
am
.
_
.p
38.
Ignition/starter
switch.
116’ Heated baCkhght
4
High-beam
warning lamp»
. . .
118. Combined windshield
washerand
R H
k. 1
39.
Ignition c011.
wiper switch
.
.
par mg
amp.
. _
‘
L H
arkin lam
40‘ Dlsmbutor‘
131.
Combined
reverse
lamp switch
and
' ‘
p g
p‘
41_ Fuel
pump.
automatic
transmission
safety
Panellamp
switch
or
rheostat
swrtch.
SWitCh-
43
*
Oil
pressuregauge'
147
Oil
pressure
transmitter
Panel lamps.
44.
Ignition
warning
lamp.
150- Heated back_light warning lamp
Number-plate
illumination
lamp.
45.
Speedometer.
(GT OHIY).
R.H.
stop
and tail lamp. 46. Coolant
temperature
gauge.
152~ Hazard
warning lamP~
L.H.
stop
and tail lamp.
47. Coolant
temperature
transmitter.
153-
Hazald warning SWitCh-
Stop
lamp
switch
49'
Reverselamp switch
154.
Hazard warning flasher
unit.
Fuse unit.
50' Reverselamp.
159. graketprfssug■
warning lamp and
mp es pu
.
Interior
courtes
lam
or ma
53, F d '
‘ '
.
li
ht earl
cars}:
p p
0g
and
nvmg
13ml)SWItCh
160. Brake
pressure
failure switch.
I;
(
y
)
54.
Driving lamp.
. . .
.
R.H.
door
switch.
168.
Ignition key audible
warning
55. Fog lamp.
buzzer.
L.H.
door
switch.
. _ .
57. Cigar-lighter illuminated.
169.
Ignition
key
audible
warning door
Horns.
I _
switch.
59.
Map
light sw1tch(early
cars).
Horn-push.
60.
Radio.
170. RH. front side-markerlamp.
Flsh unit.
171.
L
.f
t
‘d- k
.
a
er
64.
Bi—metalinstrument
voltage
’H
ton
SI e mar er
lamp
Direction
indicator
switch. stabilizer.
172. RH.
rear
side-markerlamp.
or
.
Direction
indicator/headlamp
65-
Luigtgc'illge
Compartment
lamp 173-
L.H.
rear
side-markerlamp.
sw
.
■aggfr'
66
L l
174.
Starter solenoid relay.
Combined direction
indicator/
'
“ggage
compartment
amp'
D - v
-
headlamp
■asher/headlamphigh_
67-
Line fuse.
198.
river
3
seat
belt buckle sw1tch.
low
beam/horn-push
switch.
199. Passenger’s
seat
belt buckle switch.
or
68. Overdrive
relay unit.
,
.
Combined direction
indicator/
. .
200. Passenger
5
seat
sw1tch.
headlamp
■asher/headlamp
high_
71. Overdrive solenmd.
10Wbeam
switch
201. Gearbox
switch
seat
belt
warning.
'
72.
Overdrive manual control
switch.
202 w
. l.
h f
Direction
indicator
warning lamps.
_ .
'
ammg
‘g
t‘
amen
belts‘
73. Overdrive
gear
sw1tch.
203
Line diode
.
.
l
.
- .
R H
from
name!
mp
74. Overdrive
throttle switch.
L.H.
front flasher
lamp.
CABLE
COLOUR CODE
N. Brown.
P.
Purple. W.
White.
U. Blue.
G. Green.
Y.
Yellow.
R. Red.
LG.
Light Green. B.
Black.
0. Orange.
When
a
cable has
two
colour code letters
the ■rst denotes the
main
colour and the
seconddenotes the
tracer
colour.
MGB.__
.
Issue73. R9961

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English