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Close-up of vehicle-specific wiring and electrical connectors used in an ORIS DUO complete towbar retrofit kit.

Wiring kits for towbars from ORIS

The right electrical connection for safe trailer functions and maximum compatibility

The wiring kit is the central interface between the vehicle and the trailer when towing. It is the wiring kit that makes the towbar fully usable, as it establishes the electrical connection and ensures that lighting and monitoring functions, for example in accordance with Section 49a of the German Road Traffic Licensing Regulations (StVZO), are transmitted reliably.

ORIS wiring kits are developed based on many years of experience in automotive original equipment and offer solutions for a wide range of requirements. The clear focus is on modern 13-pin systems, which not only enable all lighting functions but are also increasingly able to support driver assistance systems in passenger cars.

The result is a future-proof and versatile solution for everyday use, leisure and transport.

Rear view of a BMW SUV with an ORIS towbar coupled to a boat trailer. The trailer is electrically connected via the towbar socket, with a grassy park and trees in the background.

Why is a wiring kit essential for a towbar?

A wiring kit establishes the electrical connection between the vehicle and the trailer and ensures that all relevant signals are transmitted reliably. These include indicators, brake lights, tail lights and the rear fog light, whose function is required by law.

Modern 13-pin wiring kits go much further. They enable additional functions such as reversing lights, a continuous power supply or charging lines for caravans and bike carriers. They also support further functions of an electrical vehicle-trailer connection, such as trailer stabilisation when towing. This makes the wiring kit a key component for comfort, safety and functionality when towing a trailer.

Without a suitable wiring kit, a towbar cannot fully perform its function. Only the combination of the mechanical connection and electrical integration makes the system fully operational.

Which wiring kit solution is right for me?

The choice of the right wiring kit depends above all on the vehicle and the intended use. Vehicle-specific systems offer the highest level of integration and provide comprehensive support for modern vehicle functions. Universal solutions, on the other hand, stand out thanks to their flexibility and broad range of applications.

Anyone who needs additional functions or wants to adapt existing systems benefits from suitable accessory and extension solutions. This allows the functional scope to be expanded in a targeted way without completely replacing existing installations.

The focus is almost always on the 13-pin variant. It offers the widest range of functions and is the established standard for modern vehicles and trailers.

Quality and safety at OE level

ORIS wiring kits are developed based on many years of experience in automotive original equipment (OE). The systems are designed to work reliably with modern vehicle electrical systems and ensure secure signal transmission.

The combination of high-quality workmanship, precise tailoring and comprehensive functionality ensures that ORIS wiring kits meet the requirements of current vehicle platforms. At the same time, they ensure a high level of operational reliability in everyday use.

Clear instructions for safe installation

Detailed, illustrated installation instructions are available for every ORIS wiring kit, presenting the entire installation process in a structured and easy-to-follow way. Each step is described in a practical manner, allowing even complex installation situations to be handled safely and all components to be integrated correctly.

In addition to the installation itself, the instructions provide valuable additional information on the electrical connection. This includes guidance on safely preparing the vehicle, routing the cables correctly and properly protecting the electrical connections. Important details on integration into the vehicle’s electrical system are also presented clearly.

Another focus is commissioning. The instructions include clear guidance and support for coding and software integration into the vehicle, including recommendations for common diagnostic tools. They also describe function checks, typical sources of error and how to resolve them, ensuring that all systems work together reliably and without faults after installation.

Frequently asked questions about wiring kits

A wiring kit establishes the electrical connection between the vehicle and the trailer. It ensures that all lighting and monitoring functions are transmitted correctly.

Without a wiring kit, no electrical signals can be transmitted. It is the wiring kit that makes the towbar fully usable.

7-pin systems cover the basic lighting functions. 13-pin wiring kits offer additional options such as a continuous power supply, charging lines and reversing lights, making them the modern standard.

Suitable retrofit solutions are available for many vehicles. Installation is usually carried out by a specialist workshop, which fits the wiring kit and integrates it into the vehicle.

The choice depends on the vehicle type and the desired functionality. Vehicle-specific systems offer maximum integration, while universal solutions can be used flexibly.

How ORIS wiring kits benefit drivers:

  • Reliable electrical connection for maximum safety and long service life throughout the vehicle’s lifetime
  • Modern 13-pin systems for maximum functionality and comfort when towing a trailer
  • Future-proof solutions for current vehicles

Here’s why ORIS wiring kits are so popular with workshops:

  • Broad range for different vehicle types
  • Short installation times thanks to precise vehicle tailoring and clear installation instructions
  • Expandable systems thanks to accessories and spare parts
  • High compatibility with modern vehicle electrical systems
  • “Fit & Forget” - lowest complaint rates thanks to original equipment quality
  • Also available as a DUO complete set comprising an ORIS towbar and a vehicle-specific 13-pin wiring kit