This electrical converter is used to exchange a 4-pin vehicle plug for a 7-pin European plug.<br> A dust cover is included on the side of the 7 pin Euro trailer to keep the plug clean when not in use.<br> The plug-and-play design minimizes the need for new cables inside without the need for additional adapters.<br> Wiring of 4 way American flat connectors on trailers with European 7 way trailer wiring.<br> Converter with the function of separating the "stop" signal from American vehicles with a 2-wire system<br> Installation guide:<br> a) Before connecting the inverter to the vehicle, check that All vehicle signals are turned off.<br> B) Connect one side of the converter to the existing 4 way US flat connector vehicle.<br> c) Insert the other EU trailer plug into the plug converter.<br> d) Check that all connections are secure.<br> e) No maintenance of the power adapter is required during use.<br> color: Black<br> Material: plastic<br> Package contents:<br> 1x trailer light converter<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.