Wiring Connections For B.s.a. Headlamp Cowl; Replacement Bulbs; "B" Model Wiring Diagram - BSA B31 Instruction Manual

SettiDg
the Beam. Thc
best
way
of
checking
the
setting
of
the
lamp
is
to
stand the
motor
cycle
in
front of
a
liglr
coloured
pall
at
a distance
of about
25
feet.
If
lecessary,
slacken
the bolts
securing
the
headlamp
and move the
lamp
until, with
the main driving
light
switched
on,
the
beam
is projected
straight
ahead
and pamllel with
the
ground. With
tbe lamp
in
this position,
the
height of the
beam
cenfe on
the
wall should
b€ the same as
the height
ofthe
centre
of
the headlamp
from
the
ground.
Stop
Ligbt Switcb. This is
operated
by
the brake rod
tfuough
a
spring-
It
is desirable
to
see
that
any mud
or
grease
is periodically
cleared away
from the swiich
and
the operating
mechanism
should
be oiled
occasionally
wirh thin
oil.
Resr
Stop
Lamp- The red
transparentplastic portion ofthe
lamp
can
b€
raken
offby
removing the
two
retaininB screws.
ReDlicement
Br
bs
Lucas
No.
Watts
.. 312
30124
.. 988
3
.. 384
6/18
(itrdex)
WIRING
CONNECTIONS FOR
B.S.A.
HEADLAMP
COWL
When this
is packed
as a
loose item
(i.e.,
not
installed in
positioo on
the
fiont
forks),
it
comprises
an actual cowl
unit, with
the
threæ
followitrg items
attached
to
it:
The Main
Svitcb.
This
is on
the
left-hand side, and
has
seven
teftinals,
or
binding posts,
on its
unde$ide
oumbered clockwise.
Speedometer
Head.
This has
on its
underside
the
con-
nector
for
the
s[æedometer
light on
the side adjacent
to
the maitr switch, the other iterns
being
the
contrcl
fot
the
speedometer
t
p
and the actual
drive.
The lattgr passes
through the
headlamp
shell.
Airmete..
This is
on
the
right,
and has
on its
undercide
two
tetuinals,
the one next
to
the speedometer head
being
the negative. and the othe. beiog the
positive.
I
Fig.22.
'B' Model
wiring diagtum
(
neg.rtir)e
earth
*
early ntodels)
66