7-Way Round RV Blade to 4-Way Flat Trailer Wiring Adapter Connector Plug 7/4 Pin Description： Versatile in design, this trailer wiring adapter easily connects mismatched vehicle receptacles and trailer plugs, converting your 7-way blade receptacle to a standard 4-way flat connector that is weather resistant. This trailer wiring harness adapter equips the 4-pin wiring socket with a spring-loaded dust cover to protect the terminals from water, dirt, and corrosion that can affect standard connections. This trailer hitch wiring harness adapter plugs into any standard 4-way flat and can be used to connect tail lights, brake lights, turn signals for easy installation. This 7-pin to 4-pin trailer adapter wiring is ready to plug into your vehicle or trailer wiring with durable construction. For long term use and reliable connection the housing of this trailer wiring harness adapter is made of durable black plastic will never rust or corrode. Weather Resistant. To help protect this trailer light converter from the elements, it comes with a rubberized dust cover for the 4-pin wiring connector to protect it from rain, dirt, dust, etc. when not in use. Package List: 1 * 7 way to 4 flat adapter