ISO 11446:2004 specifies a 13-pole electrical connector between towing and towed vehicles with 12 volt electrical system. It was developed in 1987 by Erich Jaeger[1] to replace older 7-pin plugs.
Notes
- ^ a b c Pins 3, 11 & 13 must not be joined in the trailer to prevent ground loops
- ^ a b Pins 5 & 7 must not be joined in the trailer without a pair of diodes
- ^ Pin 12 was assigned prior to 2012; older vehicles could be using this for a different function
References
- ^ "ISO 11446 - the JAEGER system for trailer connectors".
Sources
- Right Connections UK Limited
- ISO 11446 (2004)
- ISO 11446-1 (2012)
- ISO 11446-2 (2012)
