The supply for the speedometer
E10
(pin 10 of connector
A) is controlled by the ignition (INT) by the line for fuse
B11
up
to 2/99 or fuse
F4
of the additional fuse box
B98B
from
2/99.
Similarly, the rev counter
E15
(at
pin 15 of connector A) and the centre instrument
E20
(pin
1.).
An earth signal from instrument light dimmer
control
H10
reaches pin 6 of connector B of
E10
. This
also receives a side light activated signal, at pin 5 of connector
B (
See E2010 SIDE LIGHTS / NO. PLATE LIGHTS
).
According to the logic processed by the
internal electronic device, the speedometer
E10
sends the
lighting signal to the other instruments: to the centre instrument
E20
(pin
7) from pin 12 of connector A; and to the rev counter
E15
(3
of connector B) from pin 4 of connector B.
Switch
H10
symbols are lit up when
the side lights are switched on through the line coming from the
switch for the steering column switch unit
H5
.