Wiring Kit for Hyundai i40 – 7-pin & 13-pin Options

A vehicle-specific wiring kit for the Hyundai i40 ensures a safe, regulation-compliant electrical connection between your car and trailers, bike racks, or powered accessories. Our kits are tailored to model year, trim, and vehicle electrical specifications so lighting, signaling, and comfort features work reliably.

Technical Data & Highlights

Braked towing capacity: up to approx. 1,800 kg for estate/tourer versions.
Unbraked towing capacity: usually around 700 kg.
Luggage capacity with seats up: about 525-553 litres in wagon/tourer body styles.
Curb weight depending on trim and equipment typically around 1,600-1,650 kg.
Weatherproof connectors and corrosion-protected materials ensure longevity, especially under external mounting and frequent exposure.
Compatibility with rear-view camera, sensors or driving assistance systems should be checked; coding or activation may be required in certain trims for full functionality.

7-pin vs. 13-pin – which version should you choose?

A 7-pin wiring kit covers basic lighting and signal functions like indicators, tail lights, and brake lights. A 13-pin wiring kit adds extra functions such as constant power feed, charging or accessory lines, and reverse-trailer lighting – recommended for frequent towing or if accessories requiring power are used.

Installation & Practical Advice

Follow the installation guide carefully – check connectors, fuses, and mounting points.
Route cables neatly; mount the socket in a weather-protected place; seal all connections to protect against moisture.
Ensure a solid grounding to the chassis; do not exceed the vehicle’s electrical system limits.
For versions with cameras or sensor systems, verify whether coding or activation is required for full wiring/trailer functionality.

Why Weltmann KFZ-Teile?

Wiring kits specifically developed for Hyundai i40 models – accurate fit and tested performance.
Robust, weather-resistant components and connectors for reliable long-term use.
Fast delivery, dependable stock levels & expert advice on selection and installation.

FAQ – Wiring Kit for Hyundai i40

Do I need a 13-pin wiring kit?

If you tow frequently or use electrical accessories, yes. For simple lighting or occasional towing, a 7-pin kit is often sufficient.

Is some coding or activation necessary?

Yes – in trims with cameras, sensor systems, or additional assistance features some activation or coding may be required so that all functions are properly recognized.

Can I install it myself?

Yes – with proper tools, clean wiring, and careful installation (weatherproofing, proper fuse protection). If unsure, professional installation is safer.

Will installation affect warranty?

No – using certified, vehicle-specific parts and correct installation normally maintains the vehicle’s warranty.

Which version is best for frequent towing?

The 13-pin wiring kit offers greater flexibility and safety for frequent towing or use of powered accessories. The 7-pin version is enough for light or occasional usage.