The headlamp alignment device in
H10
is supplied at pin
3 by a line coming from the circuit for the dipped beam headlamps,
protected by fuse
F5
of the junction unit
B1
; this
line only supplies voltage to the regulator when the dipped beam
headlamps are switched on. (
See E2011 DIPPED HEADLAMPS
)
this line provides voltage to the regulator only when the dipped
beams are on.
Pin 4 of device
H10
is earthed, whilst
pin 2 sends the signal to adjust the motors
N30
(left) and
N31
(right),
through a resistive divider which alters the output voltage depending
on which of the four positions has been selected.
Motors
N30
and
N31
contain
a transducer that establishes actual motor travel on the basis of
the voltage of an adjustment signal received by pin 2 from device
H10
.
The motors are supplied through pins 3 from the line (part of the dipped
beam circuit) that supplies device
H10
, while pins 1 are
earthed.
The headlamp alignment device
H10
is
lit up (at pin 1) when the side lights are switched on by means
of the line coming from the switch for the steering column switch
unit
H5
and protected by the controls illumination fuse
B11
up to
2/99 or fuse
F4
of the additional fuse box
B98B
from
2/99.