This reliable Seachoice 7-Way Trailer Wiring Adapter lets you connect a 7-way RV-style connector to a 4-flat-style connector. This can help you connect a boat trailer to a vehicle when they don't have common connectors. This Wiring Adapter connects flat-blade brass terminals to flat pin-style tin-plated terminals. The adapter features rugged, durable molded plastic housing that resists corrosion so it is well suited for use in marine applications such as a boat trailer. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.