A number of standards prevail in Europe for trailer connectors, the electrical connectors between vehicles and the trailers they tow that provide a means of control for the trailers.
7 and 13-pin connectors The 13-pin (ISO 11446) version being phased in is newer, provides more services than the 7-pin (ISO 1724), a more positive locking and also better protection against moisture and contamination.
NEN 6120—Connectors based on ISO 1724 Multicon Feder and Multicon WeSt (Welt Standard) connectors are precursors to ISO 11446 in a design that is intended to be compatible with ISO 1724. This means that if a towing vehicle has an outlet of this type it should be able to connect a trailer with a standard 7-pin or 5-pin connector according to ISO 1724, provided that the trailer coupling follows the standard and that the trailer plug casing is not made of metal since a metal plug will otherwise short the extra pins.
Both connectors have the same electrical wiring and can be found primarily in the Netherlands and Germany.
#DINSignalColourRec. Cross-sectionNotesmm2AWG1LLeft Turn SignalYellow1.515254G+12V from battery or Rear fog lampsBlue1.515331Ground connected to chassisWhite2.5134RRight Turn SignalGreen1.515558RTail lamps, clearance lamps and registration plate lamp right sideBrown1.515654Stop lampsRed1.515758LTail lamps, clearance lamps and registration plate lamp left sideBlack1.5158Reversing lamps, control current to block surge brakes when reversing.Pink or Red/Black1.515930+12V permanentOrange or Brown/White2.5131015+12V via ignition lockGrey2.51311SpareBlack/White1.51512Spare until 2012 when it became the trailer detector pin if grounded in the trailerLight Grey1.5151331Ground (−) for pin 9 and 10 Red/White2.513
The following supplementary information exists for the connector:
Connectors of DIAB/VBG-typ These connectors are specially developed by :sv:Djurle Industri AB (DIAB) for severe conditions where snow, ice and salt are common. They can be equipped with an optional heating loop if necessary. Moreover, they are "self-disconnecting" to lower the risk of damage to the connector if the driver should forget to disconnect the plug when disconnecting the trailer or the trailer jumps off the hook.
The 14-pin, 17-pin and 22-pin connectors have the same physical dimensions, but different contact elements in the contacts.
These connectors occur primarily in Scandinavia, but vendors exist in the United States, Belgium and Great Britain, which means that they can be found outside Scandinavia as well.
Connections for these contacts listed as spare are free to use.
Maximum allowable current for ground contact is 25A.
12-pin DIAB P12
Source:
This connector is designed for 12V electrical system where the standard ISO connectors are considered insufficient. The connector is designed in the same manner as the connectors for heavy vehicles, but is physically smaller.
#DINSignalColourRec. Cross-sectionNotesmm2AWG131Ground (−) for pin 1–8White2.5132LLeft Turn SignalYellow1.515354Stop lampsRed1.515458LTail lamps, clearance lamps and registration plate lamp left sideBlack1.515558RTail lamps, clearance lamps and registration plate lamp right sideBrown1.5156RRight Turn SignalGreen1.5157Reversing lamps, control current to block surge brakes when reversing.Pink1.5158Rear fog lampsBlue1.5159Spare10Spare11Spare1230+12V permanentOrange2.513
The following supplementary information exists for the connector:
14-pin
Source:
#DINSignalColourRec. Cross-sectionNotesmm2AWG131Ground (−) for pin 1–3 and 5–12White2.5132LLeft Turn SignalYellow1.5153RRight Turn SignalGreen1.515454Stop lampsRed1.515558LTail lamps, clearance lamps, identification lamps and registration plate lamp left sideBlack1.515658RTail lamps, clearance lamps, identification lamps and registration plate lamp right sideBrown1.5157AReversing lampsPink1.5157BRear fog lampsBlue1.5158ASpare8BSpare9Spare10Spare11Spare1230+24V permanentOrange2.513
The following supplementary information exists for the connector:
17-pin
Source:
This connector is used in cases where a 14-pin connector is insufficient
#DINSignalColourRec. Cross-sectionNotesmm2AWG131Ground (−) for pin 1–3 and 5–12White2.5132LLeft Turn SignalYellow1.5153RRight Turn SignalGreen1.515454Stop lampsRed1.515558LTail lamps, clearance lamps, identification lamps and registration plate lamp left sideBlack1.5156A58RTail lamps, clearance lamps, identification lamps and registration plate lamp right sideBrown1.5156BSpare7AReversing lampsPink1.5157BRear fog lampsBlue1.5158Spare9ASpare9BSpare10ASpare10BSpare11ASpare11BSpare1230+24V permanentOrange2.513
The following supplementary information exists for the connector:
22-pin
Source:
This connector is a further development of the 17-pin connector for cases requiring support for many functions.
#DINSignalColourRec. Cross-sectionNotesmm2AWG131Ground (−) for pin 1–3 and 5–12White2.5132ALLeft Turn SignalYellow1.5152BSpare3ARRight Turn SignalGreen1.5153BSpare4A54Stop lampsRed1.5154BSpare5A58LTail lamps, clearance lamps, identification lamps and registration plate lamp left sideBlack1.5155BSpare6A58RTail lamps, clearance lamps, identification lamps and registration plate lamp right sideBrown1.5156BSpare7AReversing lampsPink1.5157BRear fog lampsBlue1.5158ASpare8BSpare9ASpare9BSpare10ASpare10BSpare11ASpare11BSpare1230+24V permanentOrange4–69–11
The following supplementary information exists for the connector:
See also
Trailer connector Trailer connectors in Australia ISO standards for trailer connectors Trailer connectors in North America Trailer connectors in military organizations
References
Symbol Guide ExampleDescriptionSocketPin