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Operation
If the system detects that a trailer has been
connected electrically, the electrical equip-
ment on the trailer will receive voltage
through this connection (pins 9 and 10). Pin
9 has a permanent live. This powers, for ex-
ample, the trailer's interior lighting. Electrical
devices such as a fridge in a caravan only
re-
c
eiv
e electrical power if the engine is running
(through pin 10).
The earth wires, pin 3 and pin 13, should not
be connected to each other to avoid over-
loading the electrical system.
If the trailer has a 7-contact connector, you
will need to use an adapter cable. In this case
the function corresponding to pin 10 will not
be available.
Trailer cable
Always secure the trailer cable to the towing
vehicle correctly. Leave a little bit of slack in
the cable for turning. However, ensure that
the cable does not rub off the ground while
driving.
Trailer rear lights
Check the trailer rear lights to ensure they
work correctly and remain legal. Ensure that
the trailer does not use more than the maxi-
mum power
›››
page 181.
Trailer connected to the anti-theft alarm:
●
When a vehicle comes from the factory fit-
ted with an anti-theft alarm and tow hitch.
●
When the trailer is connected to the vehicle
using the socket.
●
When the vehicle and trailer electrical sys-
tems work correctly and are not damaged.
●
When the vehicle is locked using the vehi-
cle key and the anti-theft alarm is turned on.
When the vehicle is locked, the alarm is trig-
gered when the electrical connection be-
tween the vehicle and the trailer is removed.
Always turn off the anti-theft alarm system
before connecting or disconnecting a trailer.
Otherwise, the tilt sensor may erroneously
activate the alarm.
Trailer with rear LED lights
For technical reasons, trailers fitted with rear
LED lights cannot be connected to the anti-
theft alarm system.
When the vehicle is locked, the alarm does
not trigger if the electrical connection with
the trailer is cut if it has rear light with light-
emitting diodes.
WARNING
Erroneous or unsuitable connection of elec-
tric cables may supply energy to the trailer
causing an anomaly in the vehicle electronics
that could result in an accident with serious
consequences.
●
All work on the electrical system must be
carried out only by a specialised workshop.
●
Never connect the trailer's electric system
to the electrical connections of the rear lights
or any other power sources.
CAUTION
Do not leave the trailer connected to the vehi-
cle when parked; places on its support wheel
or its supports. For example, when changing
the load or a puncture, the vehicle will be
pushed up or down. The force acting on the
tow hitch and the trailer could damage the
vehicle or the trailer.
Note
●
In the event of a fault in the vehicle or trail-
er electrical system or in the event of prob-
lems with the anti-theft alarm system, have
the system checked by a specialised work-
shop.
●
If the trailer accessories use energy from
the power socket when the engine is stop-
ped, the battery will be discharged.
●
For technical reasons, trailers fitted with
rear LED lights cannot be connected to the
anti-theft alarm system.
●
If the vehicle battery is running low, the
electrical connection with the trailer is auto-
matically cut.
184
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