Trailer predisposition connection
D73
includes all connections required for the tow hook socket (connector
to CUNA - UNI 9128 standards)).
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).