Nilight 7-way RV Plug connectors are designed to supply power to the trailer's taillights, turn signals, brake lights, electric trailer brakes, reverse lights, auxiliary power and ground connection. 7-way plugs and sockets are typically used on larger trailers, for heavy-duty towing, such as on gooseneck and 5th wheel trailers, as well as larger utility trailers and boat trailers.

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