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Your Professional Trailer Plug Supplier

 

Yuyao Yike Electronics Co., Ltd. was established in 2000 with a registered capital of RMB 500,000, more than 50 employees and an area of 5,000 square meters. It is only a 40-minute drive to Hangzhou Xiaoshan International Airport and Ningbo Leshe Airport. It only takes 1.5 hours to Shanghai via the Hangzhou Bay Bridge or the Jiashao Bridge. Our belief is to seek development through innovation and survive by quality.

 

 
 
why choose us
 
 
 

Broad Market

Our company specializes in the production of power cords, connecting wires, trailer lights and trailer accessories. All products have been exported to Europe, South America, Asia and other places.

 
 

Our Service

Our company provides sample delivery service to ensure that product quality meets customer needs, and we track the order production progress in real time and report to customers. If the product has quality problems caused by us, we will provide replenishment service.

 
 

Advanced Equipment

The company has large-scale cable equipment, vertical injection molding machines, PVC injection molding machines, several horizontal plastic injection molding machines, soldering equipment, automatic packaging equipment, etc.

 
 

Our Certificate

In 2005, the company passed the ISO9002 international quality system certification standard, in 2007, the company passed the UL certification, in 2007, the company passed the VDE certification, and in 2014, the company passed the CE and E-MARK certification.

 

 

Types of Trailer Plug
 

4-Way Flat Connector

Standard for light-duty trailers; handles basic lighting—tail lights, brake lights, and turn signals.

Business 5-Way Flat Connector

Adds a wire for reverse lights or surge brakes; ideal for boat trailers needing extra functions.

6-Way Round/Square Connector

Supports electric brakes and 12V power; commonly used on horse trailers and campers.

7-Way RV Blade Connector

Industry standard; manages all lighting, electric brakes, auxiliary power, and backup lights—common on RVs and large trailers.

7-Way Round Pin Connector

Similar to the 7-way blade but with round pins; used on older or heavy-duty trailers.

SAE J560 Connector

Heavy-duty 7-pin connector for commercial trucks; supports advanced functions like ABS power and auxiliary systems.

 

Product Description

 

Item

Trailer Plug

Specification

24V N Type 7 Pole

Model No.

NUT

Price

USD 1-5/piece

Material

Brass, Polyamide

Application

European Trailer Connector

Market

OEM and after sales

Quality

Standard quality

 

Euro 7 Pin Trailer Plug

 

Features of Trailer Plug

Trailer Plug Configuration is an essential component of towing. It connects the electrical systems of your tow vehicle to your trailer, allowing the trailer to operate its lights and signals in sync with your vehicle.

 

Trailer Plug Configuration is important because it ensures the safe and efficient operation of your trailer. Without a properly functioning trailer plug, your trailer's lights and signals may not work correctly, which can lead to accidents, citations, or fines.

 

Trailer Plug Configuration and its functions is crucial for anyone who tows a trailer. It ensures the safety of the driver, passengers, and other road users and prevents potential accidents. It is essential to have your trailer plug configuration checked and maintained by a qualified mechanic regularly.

 

Components of Trailer Plug

Left-hand turn

This pin activates the left turn signal of the trailer when you turn left in your vehicle.

 

Reversing signal

This pin is responsible for activating the reversing lights on the trailer, indicating that the driver is backing up.

 

Earth return

The earth return pin is used to provide an electrical connection between the tow vehicle and the trailer, which grounds the trailer and completes the circuit.

 

Right-hand turn

This pin activates the right turn signal of the trailer when you turn right in your vehicle.

Service brakes

The service brakes pin is used to connect the brake system of the trailer to the brake controller of the tow vehicle, allowing you to control the brakes of the trailer with the brakes of the vehicle.

Stop lamps

This pin activates the brake lights of the trailer when you apply the brakes in your vehicle.

Rear lamps, clearance & side marker lamps

This pin activates the tail lights, clearance lights, and side marker lights of the trailer, making it visible to other drivers on the road.

 

 

Installation and Maintenance of Trailer Plugs

Installing trailer wiring correctly is key for safety and reliability. It means connecting wires to specific functions with color codes. In Australia, the 12 Pin Flat Plug standard is used. It has special wire colors for turn signals, brake lights, and extra power.

 

Keeping connectors in good shape is important for their long life. Clean them often and use dielectric grease to stop corrosion. For trailers used near water, make sure connections are weatherproof. Use waterproof connectors and seal wires that are exposed.

 

Stopping corrosion starts with correct installation. Make sure all connections are secure and use heat shrink tubing to cover wires. For extra safety, spray metal parts with a corrosion-resistant spray.

 

Sometimes, you might need to fix wiring due to damage or wear. Issues like loose connections, damaged wires, or corroded terminals can happen. Regular checks can help spot these problems early.

European 7 Pin To 13 Pin Converter

 

Shipping

 

productcate-890-344

 

FAQ

 

Q: What does a trailer plug do?

A: The plug between your towing vehicle and trailer is pathway for all electrical information that needs to go to your trailer, this will include all of the light functions, any power required by your trailer and control to any accessories you have on your trailer, such as reversing cameras.

Q: What is a 4-way trailer plug used for?

A: The 4-way flat connector is one of the most widely used systems for basic towing needs. This vital connection provides the required running lights, turn signals, and brake lights for your trailer. There is also an additional wire for grounding your electrical system.

Q: What is the most common trailer plug?

A: 4-way flat connector
The 4-way flat connector is the most basic and commonly found connector type. It features a flat- style connector that consists of four pins or terminals that correspond to the basic lighting functions: left turn signal, right turn signal, brake lights and running lights.

Q: What is the difference between a trailer plug and socket?

A: What is the difference between trailer connectors? A socket attaches to the tow bar. A trailer plug attaches to the trailer.

Q: Can a trailer plug get wet?

A: When a trailer plug gets wet, corrosion or short circuits can disrupt power flow. Check the trailer's 7-pin plug for moisture, corrosion, or bent pins. Inspect the circuit breakers in both the tow vehicle and trailer; reset any tripped breakers. Use dielectric grease on plug contacts to prevent future corrosion.

Q: How do trailer plugs work?

A: It connects the electrical systems of your tow vehicle to your trailer, allowing the trailer to operate its lights and signals in sync with your vehicle. The most common type of Trailer Plug Configuration is the 7 Pin Flat Plug, which consists of seven pins that perform different functions.

We're professional trailer plug manufacturers and suppliers in China. Please feel free to buy high-grade trailer plug for sale here from our factory. All customized products are with high quality and competitive price.

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