26/08/2025
Assignment plan for automotive connectors
| terminal designation | Lighting and brake light systems | ancient name |
| 54 | Terminal for brake light on trailer plug connection and in combination lamps, if marking is necessary | 15/54; 54 |
| 54f | Input terminal on the flashing brake switch | 54f |
| 55 | Clamp for fog lights | 55; N |
| 56 | Output terminal on the light switch and input terminal on the low beam switch (shared supply line for high beam and low beam) | 56 |
| 56a | Output terminal on low beam switch for high beam and indicator light | 56a |
| 56b | Output terminal on the low beam switch for low beam | 56b |
| 56c | Output terminal for partial low beam | |
| 56d | Output terminal for headlight flasher contact | |
| 57 | Terminal for parking lights in motorcycle headlights (also for cars, trucks, etc. abroad) | 57 |
| 57a | Output terminal on the light or ignition switch for parking lights. Input terminal on the parking light switch (only if special marking is necessary for combined switches). | P; 57a |
| 57L | Output terminal for left parking light (only if special marking is necessary for combined switches) | PL; 57L |
| 57R |
Output terminal for parking light right (only if special marking is necessary for combined switches) | PR; 57R |
| 58 | Output terminal on light switch for marker lights, tail lights, license plate lights, instrument lighting | 58 |
| 58b | Clamp for tail light switching on single-axle tractors | 58b |
| 58c | Clamp on trailer plug connector for single-wire installation of the supply cable for the tail light on the trailer (with separate fuse protection in the trailer) | 58c |
| 58d | Terminal for adjustable instrument lighting | 58b |
| 58L | Output terminal on the light switch for left-hand side marker lights and tail lights (if separately switchable) Terminal on trailer plug connector | 58 |
| 58R |
Output terminal on the light switch for right-hand side marker lights and tail lights (if separately switchable) Terminal on trailer plug connector
| 58 |
ISO 1724
7-pin connector type 12 N for vehicles with 12V nominal voltage
(The connectors must be connected according to a predefined numbering system or according to the assigned function. The numbers are arranged as in a round connector. The cable colors are for information purposes only and are not binding. Only the numbering system clearly defines the function.)
occupancy schedule
| Connection | Color of insulation | Occupancy since 1991 | Occupation until 1990 | Terminal designation according to DIN 72552 | Lamp power and type |
| 1 | yellow | Left turn signal | Left turn signal | L | 21 Watt |
| 2 | blue | mandatory rear fog light | Not occupied or permanent plus. No grandfathering. | since 1991 only 54g or Ns | 21 Watt |
| 3 | white | mass | mass | 31 | Total lamp power |
| 4 | green | Right turn signal | Right turn signal | R | 21 Watt |
| 5 | brown | Right rear light, right license plate light |
Right rear light, right license plate light | 58R | 5W or 10W, right-hand side marker and boundary lights |
| 6 | red | brake light | brake light | 54 | 2x 21 Watt |
| 7 | black | Left tail light, left marker light, left license plate light |
Left tail light, left marker light, left license plate light | 58L | 5W or 10W, right-hand side marker and boundary light |
ISO 11446
13-pin plug connection for trailer sockets
(The plugs must be connected according to a predefined numbering system. The numbers are embossed or stamped next to the contacts in a round plug. The numbers define the function of the connected cable.)
occupancy table
| Connection No. | Color of insulation | Recommended conductor cross-section (mm²) | Terminal designation according to DIN 72552 | Occupancy since 2004 | Occupancy until 2004 |
| 1 | yellow | ≥ 1 | L | Left turn signal | Left turn signal |
| 2 | blue | ≥ 1 | 54g or NS | rear fog light | rear fog light |
| 3 | white | ≥ 1,5 | 31 | Ground for contacts 1 to 8 | Ground for contacts 1 to 8 |
| 4 | green | ≥ 1 | R | Right turn signal | Right turn signal |
| 5 | brown | ≥ 1 | 58R | Tail light, marker light, license plate light, right |
Tail light, marker light, license plate light, right |
| 6 | red | ≥ 1 | 54 | brake light | brake light |
| 7 | black | ≥ 1 | 58L |
Tail light, marker light, license plate light, left |
Tail light, marker light, license plate light, left |
| 8 | pink | ≥ 1 | RF or ZR | reverse light | reverse light |
| 9 | orange | ≥ 2,5 | 30L | Power supply (continuous positive) |
Power supply (continuous positive) |
| 10 | dark gray | ≥ 2,5 | 30g or 15 or 61 | Ignition switch or alternator-controlled power supply line. Either for a refrigerator or as a so-called charging line for a trailer battery. |
Ignition switch or alternator-controlled power supply line. Either for a refrigerator or as a so-called charging line for a trailer battery. |
| 11 | purple | ≥ 2,5 | 31 | Mass only for contact 10 | free for future expansion |
| 12 | light gray | reserved for future applications | Ground loop as coding for coupled trailers, connection of contact 3 (ground) with 12 on the trailer | ||
| 13 | light blue | ≥ 2,5 | 31 | Mass only for contact 9 | Ground for contacts 9 and 10 |