Universal adapter for using the 13-pin trailer socket as a reliable power source in cars with a professional Deutsch DT connection. This version converts the trailer connection to a 2-pin Deutsch DT connection in the socket housing and is ideal for directly connecting control units, lights, or other 12 V consumers in the vehicle and body area. The adapter is factory-set to ground and tail light polarity. If the desired polarity differs from the Deutsch DT connection, please note that the Deutsch DT socket housing is permanently molded. In this case, the polarity can be easily adjusted in the 13-pin trailer plug by changing the assignment.
Technical details
Vehicle connection: 13-pin trailer plug
Output: Deutsch DT 2-pin, socket housing
Power supply: 12 V DC
Cable length: 250 cm
Wire cross-section: AWG18 / 0.82 mm²
Maximum current carrying capacity: 10 A
Factory wiring: Ground / rear light
Polarity adjustable: Yes, via reassignment in the 13-pin connector
Note on polarity: German DT plug is permanently molded, reverse polarity is only possible in the 13-pin plug
Area of application: Passenger cars with 13-pin trailer socket
Application: Mobile and fixed power supply for vehicle and body components
Scope of delivery:
13-pin trailer plug to German DT 2-pin socket housing adapter
Product safety information
Manufacturer information:
LED-MARTIN GmbH
Halenbacher Straße 8
Rheinland-Pfalz
Arzfeld, Deutschland, 54687
service@led-martin.de
https://www.led-martin.de/
Assignment and function of the 13 pins (ISO 11446)
Pin 1 – Left turn signal (L)
Supplies power to the trailer's left turn signal.
Pin 2 – Rear fog light (54G)
Switches the rear fog light on the trailer.
Pin 3 – Ground for lighting circuits (31)
Common ground for pins 1 to 8.
Pin 4 – Right turn signal (R)
Supplies the right turn signal on the trailer.
Pin 5 – Right tail light / license plate light (58R)
Power supply for right rear light and license plate light.
Pin 6 – Brake light (54)
Switches the trailer's brake lights.
Pin 7 – Left tail light (58L)
Power supply for left rear light and side marker light.
Pin 8 – Reversing light
Supplies power to the trailer's reverse light.
Pin 9 – Continuous positive (+30)
Permanent 12 V voltage, independent of ignition or lights.
Suitable for cool boxes, chargers, or power adapters.
Pin 10 – Charging cable / switched positive (+15)
12 V only when the ignition is switched on or the engine is running.
Suitable for charging batteries in trailers or caravans.
Pin 11 – Ground for pin 10 (31b)
Separate ground for the charging cable.
Pin 12 – Reserve / additional function
Usually unassigned or intended for special functions.
Pin 13 – Ground for continuous positive (31c)
Separate ground for the continuous positive connection (pin 9).
TIP: Power supply via the trailer plug
Pole 9 (continuous positive) and pole 13 (ground) are usually used for adapters, cool boxes, or cigarette lighter sockets.
Alternatively, power can also be supplied via the rear light (pin 5 or 7) and ground (pin 3) – depending on the vehicle and application.
