Reliable Connection: The 3-pin trailer connector establishes a secure connection between the vehicle transfers to the trailer and the electronic signal lights. Supreme Quality: The 12v 3-pin trailer socket and plug has passed CE and RoHS certification. They are made of high-quality plastic and brass pins with a durable housing. Weatherproof: The 3-pin waterproof trailer socket with a waterproof silicone rubber seal. The thermoplastic housing prevents rust or corrosion, which extends the service life. Universal Fitment: This 3-pin electrical towing socket and plug is suitable for most 3-pin trailer connector wiring systems, such as agricultural machinery, RVs, boats, trucks, caravans. Excellent Construction: The simple plug-and-play design reduces the trouble of cutting or splicing. It is easy to replace the old or damaged one.