Universal Wiring Adapter for US Vehicles – 7-Way Flat to 13-Pin Euro

Welcome to Weltmann Kfz-Teile, your expert in universal electrical solutions. Our Uni-E-Harness for US vehicles enables seamless connections from a US 7-Way flat plug to a European 13-pin trailer socket (ISO 11446)—without cutting or reworking your vehicle wiring.

Typical Options at a Glance

US 7-Way Flat to EU 13-Pin Adapter – Simple plug-and-play adapter, ready to use. :contentReference[oaicite:5]{index=5}
EU 13-Pin to US 7-Way Flat Adapter – Ideal when your vehicle has a European socket but you need to tow a US-style trailer. :contentReference[oaicite:6]{index=6}
Combo Adapter (US & EU Compatible) – Includes both socket types for maximum flexibility. :contentReference[oaicite:7]{index=7}

Your Benefits at a Glance

True Plug-and-Play: No wiring modifications needed—installs quickly.
International Compatibility: Easily switch between European trailers and US-style towing setups.
Cost-Effective & Practical: No expensive rewiring or aftermarket harness required.

How to Choose the Right Adapter

Vehicle with US 7-Way from factory? → Choose 7-Way-to-13-Pin adapter.
Vehicle has Euro 13-Pin socket? → Choose adapter from 13-Pin to 7-Way.
Want maximum flexibility? → A dual-connector combo adapter is your best option.

FAQ – Frequently Asked Questions

What’s the difference between 7-Way and 13-Pin?
The US uses the flat 7-Way connector for trailer wiring. Europe uses a round 13-Pin (ISO 11446), offering more functionality, secure locking, and better moisture protection. :contentReference[oaicite:8]{index=8}

Are these adapters safe and legal?
Yes—plug-and-play adapters maintain full light and power functionality. Some also support additional circuits like constant power or brakes, depending on the model. :contentReference[oaicite:9]{index=9}

Will I lose any functions?
For lighting only, adapters work perfectly. But if your trailer needs additional power or charging, select models that specifically support those features.

Conclusion

The Uni-E-Harness for US vehicles is a clean, reliable solution for connecting your US-style tow vehicle with European trailers—plug-in and go.