Est.
1987
Current Version
ISO 11446:2012
Scope
13-pin 12V trailer connectors
Regionality
Worldwide
At the end of the 80s, ERICH JAEGER in cooperation with major players from the automotive industry developed the 13-pin 12V connectors system. Due to higher requirements on the connection between trailer and car, the prevailing 7-pin connection had to be optimized. The new 13-pin system allowed for the transmission of all lighting function and additional electrical functions with only one plug.
The standard ISO 11446 specifies
- the dimensional characteristics of 13-pin connectors for the electrical connection of towing and towed vehicles with 12 V nominal supply voltage
- the contact allocation as well as tests and requirements for the trailer connector system
- a park socket for receiving and storing the plug when it is disconnected
There are two versions of the standard:
- ISO 11446-1:2012 applies to vehicles which are not intended to cross water fords
- ISO 11446-2:2012 applies to vehicles which are intended to cross water fords
Contact Allocation for Connectors According to ISO 11446
| Contact no. | Function | Cross-sectional area | Core insulation color |
|---|---|---|---|
| 1 | Left-hand direction indicator light | 1,5 mm² | yellow |
| 2 | Rear fog light | 1,5 mm² | blue |
| 3 | Common return for contacts no. 1 to 8 | 2,5 mm² | white |
| 4 | Right-hand direction indicator light | 1,5 mm² | green |
| 5 | Right-hand rear, position and marker lights and license plate lamp | 1,5 mm² | brown |
| 6 | Brake lights | 1,5 mm² | red |
| 7 | Left-hand rear, position and marker lights and license plate lamp | 1,5 mm² | black |
| 8 | Reversing light | 1,5 mm² | pink |
| 9 | Power supply (steady, constant) | 2,5 mm² | orange |
| 10 | Power supply controlled by ignition switch | 2,5 mm² | grey |
| 11 | Common return for contact no. 10 | 2,5 mm² | white/black |
| 12 | Reserved for future allocation | --- | no core |
| 13 | Common return for contact no. 9 | 2,5 mm² | white/red |