The main beam headlamps circuit is operated
by the steering column switch unit
H5
.
By placing the switch in the main beam position
or by closing the 'flashing' contacts, the (left)
F12
and
(right)
F13
lights are supplied: it involves a supply controlled
by the ignition (INT/A) for the line protected by fuses
F6
and
F7
of the junction unit
B1
, for the left and
right headlamps, respectively.
The supply line for the right headlamp also
sends a signal to the instrument
E50
- pin 12 for connector
C - in order to supply the 'main beam headlamps on' warning light;
pin 1 for connector B of
E50
acts as an earth.