Premium Quality 4 Pin Trailer Wiring Harnesses at Competitive Prices – Your Cost-Effective China Supplier

In addition to 7 pin trailer harnesses, WIRINGLABS also provide injection molded 4-way trailer wiring harnesses, the following is a brief introduction of our products. At the same time, we accept other styles or customized services to fit your trailer wiring connection. OEM or Customization for 4 pins Trailer wiring harness is welcome.

Why Choose Our 4 Pin Trailer Wiring Harness?

Expert Craftsmanship
Our 4 Pin Trailer Wiring Harnesses are designed by industry experts to deliver reliable connections and exceptional durability. Using the highest quality materials, we ensure each harness stands up to the demands of regular use.

Outstanding Quality
Every 4 Pin Trailer Wiring Harness undergoes rigorous quality control checks to ensure it meets our stringent standards. This commitment to quality guarantees you receive a product that performs reliably every time.

Competitive Factory-Direct Pricing
As a manufacturer, we provide factory-direct pricing, offering you significant cost savings. Our competitive prices do not come at the expense of quality, ensuring you get the best value for your investment.

Simple Installation
Our 4 Pin Trailer Wiring Harnesses are designed for easy installation. The plug-and-play design allows for quick and hassle-free setup, making it accessible for both professionals and DIY enthusiasts

Product Features

Robust Construction

Made from high-quality, durable materials
Weather-resistant to withstand various environmental conditions
Secure connectors that ensure stable and reliable connections

Enhanced Safety

Reliable signal transmission for safe towing
Built-in protection against short circuits and electrical issues
Adheres to industry standards for trailer wiring

Versatile Applications

Suitable for a wide range of trailers
Ideal for utility trailers, small boats, and light-duty towing
Customizable options available to meet specific requirements

Customer Testimonials

Mark T., RV Owner

"The 7 Pin Trailer Wiring Harness from WiringLabs has been a game-changer for my RV. The installation was straightforward, and the quality is exceptional. Highly recommend!"

Emily R., Boat Trailer Owner

"I've tried several wiring harnesses, but none compare to the reliability and durability of WiringLabs' 7 Pin harness. Great product at a great price."

John D., Trailer Manufacturer

"The quality and reliability of WiringLabs' wiring harnesses have significantly improved our trailer products. Their competitive pricing and excellent customer service make them our preferred supplier."

Sarah L., Brand Owner

"Working with WiringLabs has been a game-changer for our business. Their custom solutions and factory-direct prices have helped us reduce costs while maintaining high standards."

James H., Utility Trailer Owner

"I've used several wiring harnesses over the years, and the 4 Pin from WiringLabs is by far the best. It's easy to install and incredibly reliable. Great value!"

Click Here

Lisa M., Small Boat Trailer Owner

"The quality of the 4 Pin Trailer Wiring Harness from WiringLabs is outstanding. It was easy to set up, and it works perfectly. Highly recommended!"

Click Here

Previous slide

Next slide

About Us

WIRINGLABS has been a trusted provider of trailer wiring harness solutions since 2011. Our mission is to offer high-quality, cost-effective products that meet the needs of our customers. With our experienced team and advanced manufacturing facilities, we are committed to delivering top-notch products that stand the test of time.

Ready to enhance your trailer with a premium 4 Pin Wiring Harness? Get in touch with us today!

Lighting Fast Prototype

7 days guaranteed for wiring prototype samples to support fast delivery.

Start With Low MOQ

Our team support a minimum order quantity of 100 pcs for the first order.