MG Midget Instruction Manual page 49

E L E C T R I C A L E Q t T I P M E N T .
T h e accompanying wiring diagram may appear a little complicated to the
average car user, and is really only intended to act as a guide in the case of
dismantlement of all the wiring system. It shows, nevertheless, the run of the
wires from the contact breaker to the coil, and from the coil to the junction
box. It will also be seen from this illustration that the wiring is carried out
o n the earth return system, that the negative terminal of the battery is earth'ed,
and there is a n automatic earth from the lamps, starter and dynamo. T h e r e
are, however, two separate earths that have to he made, namely from the
horn and the junction box.
T h e principal points connected with the electrical equipm,ent o n which
the owner will r'equire instruction are the instrument board, the fuses and
the wiring.
A front and rear view of the instrument board are as shown in
Illustr:~tions Nos.
30
and
3 0 ~ .
T h e instrument board contnins, reading
from left to right, nn ammeter, a switch controlling the side and tail and
LIGHT
OIL CAUSE
$WITCH
SHOULD
SHOW WHITE
-
. . .
-
. .
WHEN RUNNING
\
DASH LIGHTING
h e x l lamp illumination. T h e speedomtetcr (which is driven hy the gear box)
is placed in the centre of the instrunlent panel o n the right of which will be
seen towards the upper edge of the panel, the red ignition tell-tale light and
heneath this a socket for inspection lamp, and o n th'e extreme right an oil
circulation indicator. This indicator has four slots which when the oil is not
circulating show red, but as soon as the oil pressure reaches a predetermined
pressur~e the four slots show white through them. O n the lower side of the
panel there is the ignition switch and o n the right hand side a switch to illu-
minate the panel from behind. T h e rear view of the panel shows the central
speedometer which has a small arm attached to it for resetting th,e trip. T h e r e
are a number of connections that, of course, have to be made o n the junction
box to the switchboard and these are indicated b y colour and description o n
the wiring diagram. It will be noticed that the two lamps that illuminate the
dials and also the ignition tell-tale lamp are fitted at the back of the panel into
clips, each having its own individual socket holder. By this means a bulb
could easily be changed and should ever the ignition tell-tale bulb prove
defective o n e of the other bulbs can be temporarily used in plac'e of it. T h e
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