Cable sets for car trailers – Reliable Trailer Wiring Solutions
Cable sets for car trailers are essential for safe and efficient electrical connections between your vehicle and trailer. Whether you need trailer wiring kits, trailer cable harnesses, or complete trailer electrical kits, these assemblies ensure seamless power transmission for lights and signals.
- ✔ Easy installation with pre-assembled trailer wiring assemblies
- ✔ Durable trailer connection cables for long-lasting performance
- ✔ Compatible with various connector systems, including 7-pin and 13-pin
- ✔ Supports reliable operation of all trailer lighting functions
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Frequently Asked Questions
7-pin plug (Type N, ISO 1724) — the older standard:
| Pin | Terminal | Colour according to DIN | Function |
|---|---|---|---|
| 1 | L | yellow | Left direction indicator |
| 2 | 54G | blue | Rear fog light |
| 3 | 31 | white | Ground |
| 4 | R | green | Right-hand direction indicator |
| 5 | 58R | brown | Right-hand rear light |
| 6 | 54 | red | Brake light |
| 7 | 58L | black | Left rear light and number plate light |
13-pin plug (ISO 11446) — current standard, with additional functions and separate earth connections:
| Pin | Colour according to DIN | Function |
|---|---|---|
| 1 | yellow | Left direction indicator |
| 2 | blue | Rear fog light |
| 2a | — | Switch for rear fog light on the vehicle |
| 3 | white | Earth (circuits 1–8) |
| 4 | green | Right-hand direction indicator |
| 5 | brown | Right-hand tail light, side marker light and number plate light |
| 6 | red | Brake light |
| 7 | black | Left tail light, side marker light and number plate light |
| 8 | orange | Reversing light |
| 9 | red, 2.5 mm² | Direct power supply (terminal 30) |
| 10 | black-red | Battery charging lead |
| 11 | green-brown | Earth for charging cable |
| 12 | — | not assigned |
| 13 | white, 2.5 mm² | Earth for circuit 9 |
The numbering stamped on the plug and socket is binding — for cable sets with different numbering, this applies rather than the wire colours.
Adapter: Converting from a 13-pin connector on the vehicle to a 7-pin connector on the trailer is straightforward. Conversely, only the basic functions will work — the reversing light, constant power supply and charging circuit are missing, as there are no corresponding wires in the 7-pin system. Disconnect the adapter when not in use, otherwise the contacts will corrode.
If the lighting fails, it is usually not the bulb that is faulty, but the connection to it. Check in the following order:
- Contacts in the plug and socket — corrosion is the most common cause. Clean, dry and apply contact cleaner.
- Earth — is the connection to the frame secure and rust-free? If several functions fail at the same time, the earth connection is almost always to blame.
- Cables on the drawbar — this is where cables most often chafe through, often directly behind the plug.
- Bulbs and lights — only once everything else has been checked.
Conversion to LED: Lights must have a valid approval mark. After conversion, the trailer monitoring system in the towing vehicle may no longer be able to detect the trailer because the current flow is too low — in which case a suitable control unit will help.
Spare parts: electrical components, plugs and cables, as well as lighting.
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Product Overview
Cable sets for car trailers are designed to provide secure and reliable electrical connections between towing vehicles and trailers. These solutions, including trailer wiring kits and trailer cable harnesses, are tailored for a wide range of trailer types and connector systems. Whether you require a traditional 7-pin or a modern 13-pin setup, you will find trailer wiring assemblies and trailer electrical kits that match your specific needs. Each cable set is engineered to deliver consistent power for lighting and safety systems, ensuring compliance with road regulations.
Key Features & Benefits
Modern trailer connection cables are built for durability, offering robust insulation and weather-resistant properties. Pre-assembled wiring assemblies simplify the installation process, reducing the risk of wiring errors. These cable sets are compatible with both bayonet and standard plug systems, making them versatile for various trailer models. By choosing the right trailer cable harness, you ensure optimal signal transmission for brake lights, indicators, and other essential functions, enhancing both safety and convenience on the road.
Selection Guide
When selecting a cable set for your car trailer, consider the type of connector system required—options include cordsets for older systems with 7 or 13-pin connectors, as well as cable sets with bayonet systems. Assess the compatibility with your trailer’s electrical configuration and the length needed for your setup. Trailer electrical kits are available for both standard and specialized applications, ensuring a precise fit for your requirements. If you are uncertain, consult the product details or reach out for expert advice to ensure a seamless match.
Applications
Cable sets for car trailers are suitable for a variety of uses, from utility and cargo trailers to caravans and specialty transporters. They are essential for anyone needing to connect trailer lighting, indicators, or auxiliary power systems. Whether upgrading an existing trailer or outfitting a new one, these trailer wiring assemblies and connection cables provide a dependable solution for safe towing in all conditions.
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