Seat Alhambra Owner's Manual page 241

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Key of the Schematic diagram Fig.
Pin Meaning
1 Left turn signal
2 Rear fog light
3 Earth, pins 1 to 8
4 Right turn signal
5 Rear light, right
6 Brake lights
7 Rear light, left
8 Reverse lights
9 Permanent live
10 Live charge cable
11 Unassigned
12 Unassigned
13 Earth, pins 9 to 13
Electrical socket for trailer
The vehicle is fitted with a 13-pole power
socket for the electrical connection between
the trailer and the vehicle. With the engine
running, electrical devices on the trailer re-
ceive power from the electrical connection
(pin 9 and pin 10 on the trailer power plug).
If the system detects that a trailer has been
connected electrically, the electrical equip-
Towing bracket device
ment on the trailer will receive voltage
230:
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-
ceive 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-
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mum power page
Trailer connected to the anti-theft alarm:
When a vehicle comes from the factory fit-
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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.
Erroneous or unsuitable connection of elec-
236.
tric cables may supply energy to the trailer
causing an anomaly in the vehicle electronics
that could result in an accident with serious
consequences.
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carried out only by a specialised workshop.
WARNING
All work on the electrical system must be
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