JinHai is a wiring harness technology manufacturer that meets strict production test standards

Door Wiring Harnessproduced by JinHai meet the bending test of more than 100,000 times. Adaptability to extreme climates and corrosion resistance are important guarantees for vehicle safety and meet the highest industry standards.

Automotive Door Wiring Harness ：4 Advantages

Genuine BMW 61129219986 Door Wiring Harness

Genuine Porsche Exterior Mirror Wiring Harness

Genuine BMW 61129325965 F15 Door Wiring Harness

Features of Door Wiring Harness

Mechanical Durability: The door panel is designed to withstand over 100,000 opening and closing cycles.
Environmental Adaptability: The wiring harness subassembly utilizes a multi-layer shielding structure with silicone seals, achieving a waterproof design exceeding IP67 standards.
Modular Quick-Release: A quick-connect connection facilitates quick connection and removal between the door and the vehicle body, improving efficiency by 70% compared to traditional connections and facilitating repair and replacement.
High Integration: The integrated window lift motor, door locks, speakers, mirror adjustment/heating, and ambient lighting circuits are integrated into a compact space, increasing space utilization by over 50%.

Differentiated application areas of Door Wiring Harness

Dimensions	New Energy Vehicles	Traditional fuel vehicles
Voltage level	High-voltage wiring harness (300-800V)	Low voltage wiring harness (12V/48V)
Shielding requirements	Aluminum foil + braided layer double EMI shielding	Single shield or no shield required
Material	Silicone insulation, lightweight aluminum conductor	PVC insulation, copper conductor
Layout complexity	High (battery chassis layout + long-distance cross-region wiring)	Middle (centralized wiring in the engine compartment)

At JinHai, we manufacture wiring harnesses based on your door panel wiring space, compatible vehicle models, and personalized needs to ensure that the manufactured wiring harnesses meet your needs.

Automotive Door Wiring Harness Communication Standard

Door panel wiring harnesses must be compatible with multi-protocol communication networks:

Low-speed control: The LIN protocol (≤20kbps) is used for basic functions such as door locking and window lifting. It is low-cost and highly resistant to interference.
Medium-speed data transmission: The CAN bus (1Mbps) supports real-time control such as rearview mirror adjustment and ambient light color synchronization.
Future trend: Ethernet (100Mbps and above) will gradually replace traditional buses to meet the high-bandwidth requirements of autonomous driving sensors.

We Partner With Top Manufacturers and Suppliers

Our purchasing department uses a global strategy to source quality components from special channels.

Quality and Safety, Guaranteed

Adhering to IPC/WHMA-A-620 standards, we ensure reliability and performance in each product.

Wiring Harness by Applications

Genuine BMW 61129219986 Door Wiring Harness, Rear (Inc. 750LiX, 760Li & 750Li)

Genuine BMW 61129325965 F15 Door Wiring Harness, Rear (Inc. X5)

Genuine Porsche Exterior Mirror Wiring Harness, Driver’S Door Porsche 911 1987-89

2004 Jeep Grand Cherokee Door Wiring Harness

Product Package

After-sales Instructions

How to handle quality issues or returns?

At JinHai, if there are any quality issues with the goods we ship, we generally handle them in the following three ways:

If the product cannot be repaired, JinHai will directly send the customer a good product to replace the defective one;
If the product is repairable, JinHai will negotiate with the customer and coordinate with a third party approved by the customer to assist with the repair, and the cost will be borne by JinHai;
Under normal order conditions, JinHai will give customers products at a rate of 0.1% of the order amount for later product maintenance or replacement.

Quality begins with details, and service builds trust. The Jinhai after-sales team is dedicated to resolving your issue!