3-Pin Round Trailer Connector Plug & Socket 12V – RV Caravan Truck

3-Pin Round Trailer Connector – Reliable 12V Electrical Link for Caravans, RVs & Trucks

Keep your trailer lights and electrical systems connected with confidence. This 3-pin round trailer connector plug and socket set delivers a secure, durable 12V electrical connection between your tow vehicle and trailer. Whether you're hauling a caravan across the country, towing a boat to the lake, or running a work trailer behind your truck, this connector ensures your signal lights and electrical wiring work flawlessly every time.

Made in Mainland China.

Why Choose This Trailer Connector?

• Universal Compatibility: Works with caravans, RVs, trucks, boats, tractors, and trailers — wherever a 3-pin round connector is needed.
• High-Quality PP & Copper-Zinc Alloy Contacts: Durable polypropylene housing resists impact and weathering, while copper-zinc alloy flat plug contacts ensure excellent conductivity and corrosion resistance.
• DIN Standard Compliance: Plug meets DIN 72572; socket meets DIN 9680 — internationally recognized standards for trailer electrical connectors.
• Secure Signal Light Connection: Designed specifically to connect trailer signal lights (brake, turn, running lights) to the power supply reliably.
• Easy Installation: Simple plug-and-socket design with standard mounting hole dimensions for straightforward fitting to your vehicle or trailer.
• Brand New & High Quality: 100% new components, ready to install right out of the box.

Technical Specifications

3-Pin Connector (Plug) – DIN 72572

• Material: Plastic (PP)
• Connection Contacts: Flat plug, copper-zinc alloy
• Length: 81 mm
• Diameter: 31 mm

3-Pin Socket – DIN 9680

• Housing Material: Plastic
• Connection Contacts: Flat plug, copper-zinc alloy
• Length: 42 mm
• Total Width: 61.5 mm
• Mounting Hole Distance: 46 mm
• Installation Hole: 26 mm

Package Includes

• 1× Socket OR 1× Connector (please select your preferred option)

Compatible With

Caravans · RVs · Trucks · Boats · Tractors · Trailers · Farm Equipment

For more trailer and automotive electrical accessories, explore our 1.2m Audio Cable with Mic & Volume Control or browse our 1-to-5 SATA Power Splitter Cable for other wiring solutions.

For guidance on safe trailer wiring and road safety, refer to the U.S. Consumer Product Safety Commission (CPSC) for electrical safety standards.

Note: Due to monitor variations, actual color may differ slightly from images. Please allow ±1–3 cm measurement deviation due to manual measurement.

Frequently Asked Questions

Q: What vehicles is this 3-pin trailer connector compatible with?

A: This 3-pin round trailer connector is compatible with a wide range of vehicles and equipment including caravans, RVs, trucks, boats, tractors, and general trailers that use a standard 12V 3-pin round connector system (DIN 72572 plug / DIN 9680 socket).

Q: Does this listing include both the plug and the socket?

A: Each listing includes either 1× socket or 1× connector plug — please select your preferred option when ordering. If you need both, simply add two items to your cart and select one of each.

Q: What is the voltage rating for this trailer connector?

A: This trailer connector is rated for 12V electrical systems, which is the standard voltage used in most automotive, caravan, RV, and trailer lighting applications.

Q: Are the contacts resistant to corrosion?

A: Yes. Both the plug and socket feature flat plug contacts made from copper-zinc alloy, which provides good electrical conductivity and natural resistance to corrosion — important for outdoor and all-weather trailer use.