China Professional Car Wiring Harness Manufacturer

JinHai is a technology manufacturer specializing in designing ceiling wiring harnesses. We adapt to different scenarios and provide a variety of customized solutions to help customers choose the best solution. The customized solutions provided by JinHai are worthy of your choice and trust.

4 Advantages of Automotive Roof Wiring Harness

NEW-GM-20802968-Harness-Assembly-Roof-Wiring

NEW-OEM-GM-Roof-Wiring-Harness-23228751-Tahoe-Suburban-Yukon-Escalade-201

New-OEM-Roof-Wiring-Harness-2016-Chevrolet-Silverado-2500HD-GMC-Sierra-2500HD

Wire-Harness-Sews-Cabind-SPA-47619219-ROOF-HARNESS-FARMALL-PS

Advantages Of Our Roof Wiring Harnesses

Lightweight and Space-Saving: The flat design allows this wiring harness to meet both functional requirements and smooth routing in confined spaces.
Mechanical Durability: The flexible design, capable of over 50,000 flex cycles, adapts to various layouts and ensures long-term reliability.
Environmental Adaptability: A magnetic fastening system prevents damage to the ceiling, and a wide temperature range ensures enhanced practicality.
Strong Safety Protection: Fully flame-retardant materials and a double-locking design for key connectors prevent loosening, ensuring continuous power supply to critical devices such as airbags.

Application Areas for Headliner Wiring Harnesses

Our ceiling wiring harnesses are widely used in:
Lighting systems, intelligent safety assistance systems, and connected car systems for passenger cars, commercial vehicles, and new energy vehicles
Industrial equipment and specialized vehicles

At JinHai, we manufacture wiring harnesses based on the vehicle’s ceiling space layout and individual requirements, ensuring they meet your specific needs.

Roof Wiring Harness Communication Standard

Ceiling area equipment mostly uses a layered communication architecture, and the protocol selection needs to match the device characteristics:

Device Type	Recommended Agreement	Rate/Characteristics	Application Cases
Sunroof motor/sensor	LIN bus	20Kbps, single line low cost	Door glass control
In-car entertainment system	MOST	150Mbps, optical fiber transmission with anti-interference	Audio and video signal transmission
Rain/light sensor	CAN-FD	2Mbps, high real-time performance	Automatic wiper linked with ECU

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.

Key Decision Points in Roof Harness Design

Dimensions	Design Goals	Technical Solution
Electrical performance	Stable power supply and signal fidelity	LIN/CAN protocol selection + shielded twisted pair
Mechanical reliability	>50,000 bending lifespan	Flexible conductor + aerogel buffer layer
Environmental adaptability	-40℃~150℃ wide operating temperature range	Silicone insulation + temperature compensation algorithm
Safety and Compliance	Flame retardant + anti-loosening	Cotton flame retardant fabric + CPA connector
Space efficiency	Hidden wiring + zero interference	Magnetic fixation + flattened wiring harness

Wiring Harness by Applications

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!