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ISO 3732 - Type S

Waterproof 7 Pin Trailer Socket
ISO 3732 Pinning

Standard Description

This connector is the same as the 12N connector, but the center pin (pin 7) has changed gender in order to make the plug unique. Pin 7 has been replaced with a pin in the plug and socket in the outlet.

This connector supplements the 12N connector for power supply of auxiliary items.

 
 

7-pin 12V trailer connectors

 

#
DIN
British (-1999)
ISO 3732 (1999-2008)
Color
Wire Cross Section
AWG
1   Reversing Lamps Reversing Lamps Yellow 1.5 15
2 (15) Battery Charging Spare Blue 2.5 13
3 31 Common Ground Common Ground Except for pin 6 White or Grey 2.5 13
4 30 Feed for internal 12V equipment except refrigerator +12V permanent Green 2.5 13
5   Spare Spare Brown 1.5 15
6 15 Feed for refrigerator +12V via ignition lock Red 2.5 13
7   Spare Ground for pin 6 Black 2.5 13