The headlamp washer delay unit
R3
is located in junction unit
B1
.
It is supplied (pin P) directly by the battery
(MAXIFUSE CENTR of
B5
) via fuse
F12
of junction
unit
B1
; pin 31 is earthed at
C15
.
The device only works with the dipped headlamps
on. In effect, when the dipped headlamps switch
H6
is on,
pin 6 of connector B of control unit
M45
is supplied by
the battery via the contact for
R1
and fuse
F13
.
Pin 9 connector C of control unit
M45
receives a supply from the INT/A line via fuse
F1
; this
line also supplies the coil for relay
R1
of
B1
.
In this situation the control unit
M45
supplies the coil for relay
R1
of
B3
from pin 5
of connector D; the contact for
R1
supplies pin 56 of the
headlamp washer timer
R3
via fuse
F7
.
When the windscreen washer/headlamp washer
switch for the steering column switch unit
H5
is closed,
pins 1 and 4 of connector D of the windscreen wiper motor are short circuited;
the device sends the command to the timer
R3
at pin 30 via
pin 3 of connector A.
If there are signals at pins 56 and 30 of
R3
simultaneously, the latter supplies the headlamp washer electric
pump motor
N25
from pin 5.
The supply for the windscreen wiper motor
N15 is supplied by pin 3 of connector B from the contact for relay
R1 via the fuse
F14
.
N15
receives an earth from pin
1 connector A.