Trailer predisposition connection
D73
includes all connections required for the tow hook socket (connector
to CUNA - UNI 9128 standards)).
Pin 4 of
D73
receives a supply directly
from the battery via the line for the specific fuse
B70
;
pin 7 is earthed.
Pins 5 and 6 receive signals for the turn
signals from electronic device
R2
of junction unit
B1
.
If there is a trailer, pin 2 of the trailer
preparation coupling
D73
, supplies the 'trailer present'
warning light in the instrument panel
E50
(pin 11 connector
C).
The device
E50
is earthed at
C21
via pin 16 connector A.
The signal for the turn signals reaches
pin 1 from Check device
M45
- pin 4 of connector C.
The signal for the fog lamps reaches pin21
from Check device
M45
- pin 3 of connector C.
The signal for the brake lights reaches
pin 3 from Check device
M45
- pin 5 of connector C.