1. Wide application: This trailer wire adapter plug powers the trailer lights. Connect the trailer plug to the vehicle socket, and you can turn on the taillights, brake lights, and turn signals. 2. Brass terminals: This trailer wire connector plug uses brass terminals, which have excellent electrical conductivity. The ABS housing is not easily damaged. 3. 7-pin to 4-pin: This trailer adapter plug is suitable for most trailers, cars, and vehicles equipped with a 7-pin European circular plug to a 4-pin American flat socket. 4. Easy installation: This round-to-flat trailer adapter adopts a plug-and-play design, which is simple to install, saving time and effort. 5. Secure connection: This 7-pin to 4-pin trailer adapter provides a stable and reliable connection and is easy to use. Item type: Trailer wire adapter plug Conversion type: 7-pin European to 4-pin American Application scenarios: Trailers, tractors, RVs Color: Black Material: ABS + copper Package contents: 1 trailer wire adapter plug Only the above package contents are included, no other products. Note: Light reflection and different monitors may cause slight differences between the color of the item in the picture and the actual object. A measurement tolerance of +/- 1 - 3 cm is allowed.