This electrical converter allows you to change a US-style 4-way flat plug to a European-style 13-pin connector. Plug and play design minimizes the hassle of installing new wiring; no additional adapters required. Includes a dust cover on the European 13-pin trailer plug side to keep the connector clean when not in use. Converter features the ability to separate the "stop" signal from the two-wire system used in US vehicles. Enables connection between a US 4-way vehicle connector and a European 13-way trailer wiring system. Instructions: 1. This trailer light converter is designed to separate the "stop" signal from the two-wire system in US vehicles for use with European trailers, including boat trailers, bike carriers, and similar applications. It provides an electrical solution when connecting a US vehicle with a 4-way flat connector to a European trailer with a 13-pin round connector. 2. If your US vehicle has a 4-pole flat connector and your European trailer has a 13-pin round plug, and your vehicle requires separation of stop and tail signals, this trailer wiring adapter is necessary. Installation Guide: a) Before connecting, ensure all vehicle signals are turned off. b) Connect the converter to the existing US 4-way connector on the vehicle. c) Insert the European trailer plug into the converter's socket. d) Ensure all connections are securely fastened. e) Once installed, no maintenance or further adjustments are required. Color: Black Material: Polyester Package Contents: 1 x Trailer Light Converter Note: Lighting and display differences may cause slight variations in color between the product and the image. Measurement may vary by +/- 1-3 cm.