China Customized Trailer Wiring Harness Manufacturers Suppliers Factory - Made in China

The Trailer Wiring Harness Manufacturer!

Founded in 2009, our company specializes in the design and manufacturing of various customised wiring harnesses.

Etrailer Wiring Harness
OBD Extension Cable/Wiring Harness PBT Insulated Electronic Application
Gooseneck Wiring Harness
Offering flexible customization services such as full customization and design-based customization
Trailer Wiring Parts
Truck Bed 7-Pin Trailer Wiring Harness Extension
Jeep Jl Trailer Wiring Harness
4-Pin Trailer Harness Adapter with Medical Silicone Ribbon Cable for Trailer Mods and Electronic/Medical Device Wiring
02 F250 Trailer Wiring
Trailer 4 & 7 Pin Trailer Tow Wiring Harness Plug 02 Thru 04 F-250 F-350
08L91 SHJ 100A
Trailer Hitch Wiring Harness 08L91-SHJ-100A
13 Pin Wiring Kit
13 Pin PVC RV Harness Trailer Cable Power Cord
16 Foot Trailer Wiring Harness
Flat connector connector trailer harness
Wishbone Wiring Harness
Wire Connector for Trailer Light Wiring Harness Extension
Wiring Trailer Lights 5 Wire
Wire Connector for Trailer Light Wiring Harness Extension

Why choose us

Core capabilities

Possesses strong R&D capabilities and a global supply chain. The factory adheres to strict quality control standards, ensuring 100% on-time delivery. by optimizing the supply chain and cost efficiency, it provides customers with cost-effective solutions.

Production Equipment

The company owns over 50 sets of machinery products, which can support the development and production of various products such as cables, molds, plastics, and industrial metal goods.

Our Certificate

The company has obtained the ISO international standard certification, which serves as an important guarantee for the quality of products and compliance with production management systems. This certification reflects that the company's production processes and quality control measures meet global standards.

Our Service

Provides customized research and development (R&D customization) support, designs exclusive product solutions based on the needs of the customer's field (such as aviation, automotive, and industry); also offers "one-stop procurement consulting" to help customers integrate their diverse product needs and streamline the procurement process.

Conductor Material	Silver-Plated copper
Jacket Material	Copper
Insulation Material	Rubber
Application	Automobile
Voltage	12V-24V
Working Temperature	-20°C~80°C
Place of Origin	China
Model Number	MC-A032
Certification	RoHS
Length	Customized
MOQ	Small order can be accepted
Shelf life	1 Years
Service	OEM ODM Accept
Express	DHL UPS EMS TNT Fedex
Package	PE Bag

Benefits of Using a Trailer Wiring Harness

Enhanced Safety

Safety is the foremost benefit. With a properly installed wiring harness, the trailer's lights function in tandem with the towing vehicle, reducing the risk of accidents.

Legal Compliance

Most jurisdictions require trailers to have functioning lights for brakes, turns, and night visibility. Non-compliance can result in fines and legal penalties. Using an appropriate wiring harness ensures adherence to these regulations.

Protection of Vehicle Electrical Systems

A quality wiring harness protects the towing vehicle's electrical system from overloads and short circuits. Advanced harnesses include features like modulite power modules that draw power directly from the battery, safeguarding the vehicle's sensitive electronics.

Application of Trailer Wiring Harness

Lighting:

The trailer wiring harness facilitates the operation of essential lighting components on the trailer, including tail lights, brake lights, turn signals, and marker lights. These lights are crucial for indicating the trailer's presence, turning intentions, and stopping actions to other road users.

Brake Control:

In trailers equipped with electric or electric-over-hydraulic brakes, the wiring harness connects to the towing vehicle's brake controller. This allows the driver to activate the trailer's brakes alongside the tow vehicle's brakes, providing better control and safer braking performance.

Power Supply:

The wiring harness enables the trailer's onboard electrical components, such as interior lights, power outlets, or charging systems, to draw power from the towing vehicle's electrical system. This ensures that the trailer's batteries are charged and the essential devices are powered during transit.

Common Trailer Wiring Color Codes and Their Functions

Wire Color	Wire Gauge	Function	Connector
White	12 - 14 GA	Ground	All (4-way, 5-way, 6-way, 7-way)
Brown	16 - 18 GA	Tail / Running Lights	All (4-way, 5-way, 6-way, 7-way)
Yellow	16 - 18 GA	Left Turn Signal / Left Brake Light	All (4-way, 5-way, 6-way, 7-way)
Green	16 - 18 GA	Right Turn Signal / Right Brake Light	All (4-way, 5-way, 6-way, 7-way)
Blue	12 - 14 GA	Electric Brakes	5-way, 6-way, 7-way
Red	12 - 14 GA	Auxiliary Power or Reverse Lights	6-way, 7-way
Black	10 - 12 GA	Battery Charge / Auxiliary Power	6-way, 7-way
Purple	16 - 18 GA	Reverse Lights	7-way

Packing Details

We will packing by professional export packing,safety against breakage, finally into the wooden cases/ carton/pallet or customized package.

productcate-819-337

Delivery Details

We can deliver by SEA,air,rail transportation,the China-Europe Railway Express etc.

TNT, DHL,UPS, FEDEX, EMS，S.F EXPRESS etc.

FAQ

Q: What makes Mingching Electronics different from other wire harness suppliers?

A: As a 16-year experienced (founded in 2009) customized wire harness specialist, we stand out with three core advantages: first, dual ISO certifications (ISO9001 & ISO/TS 16949) to meet automotive and industrial quality standards; second, one-stop customization from 2D/3D drawing design to rapid prototyping (samples ready in 3-5 days); third, 93.6% on-time delivery rate and global supply chain support covering North America, Europe, and beyond.

Q: How do I start a custom wire harness project with Mingching?

A: The custom project process is simple and clear, with 4 steps:
Submit your requirements: Fill out the "Custom Inquiry" form on the website, including product application (e.g., automotive diagnostic/OEM equipment), technical specs (e.g., wire gauge, insulation material), and quantity.
Receive a solution & quote: Our engineering team will review your needs and provide a customized design plan, 3D drawing (if needed), and detailed quote within 48 hours.
Confirm & make a deposit: After you approve the plan and quote, sign the cooperation agreement and pay a 30% deposit to start production.
Production & delivery: We will send production progress updates every 3 days. After production, we conduct a full quality inspection, then ship the goods once you pay the balance.

Q: Can I buy samples placing orders?

A: Yes.Please feel free to contact us.

Q: What is your lead time?

A: It depends on the order quantity and the season you place the order. Usually we can ship within 7-15 days for small quantity,and about 30 days for large quantity.

Q: What is your payment term?

A: T/T,Western Union,Alipay,MoneyGram,and Paypal.This is negotiable.

Q: What is the shipping method?

A: It could be shipped by sea,by air or by express(EMS,UPS,DHL,TNT,FEDEX and ect).Please confirm with us before placing orders.

Mingching Electronics Technology Co., Ltd. is one of the most reliable trailer wiring harness manufacturers and suppliers in China. With over 15 years' experience, we warmly welcome you to wholesale high quality trailer wiring harness for sale here and get free sample from our factory. Customized orders are welcome.

Etrailer Wiring Harness, wiring harness, Wiring Trailer Lights 5 Wire