Description: Features: Connect the major vehicle and the additional trailer; Transfer the electronic signal from the vehicle to trailer. 7 Way Flat Pin To 4 Way Round Pin Trailer Wiring Adapter Plug. Take the guess work out of trying to wire your trailer lights with the simple plug and play trailer light adapters. These adapters simply plug into the factory harness and have a convenient pig tail that your lights plug into. Applications: Trailer, Boat, Motorhome... Specification: Voltage: 12V Material: Plastic+Copper Size: Approx. 9.5*7.5cm/3.7*3 Inch Package Includes: 1 Piece Trailer Plug
