Wiring Harnesses and Connectors for Electric Vehicles Market

Wiring Harnesses and Connectors for Electric Vehicles Market to Hit USD 19.79 Billion by 2031, Driven by Soaring EV Demand

North America leads in market share, while China drives future growth with robust raw material availability and advanced manufacturing capabilities.

According to a recent industry report, the global wiring harnesses and connectors for electric vehicles market was valued at USD 2.99 billion in 2022 and is projected to reach a staggering USD 19.79 billion by 2031, expanding at a CAGR of 23.37% from 2023 to 2031. The market’s growth is largely fueled by the global shift toward electric mobility, increasing consumer demand for EVs, and the push for automotive safety and sustainability.

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What are Wiring Harnesses and Connectors in EVs?

Wiring harnesses are complex assemblies of wires, connectors, and terminals that distribute electrical power and data signals across the vehicle. These components play a pivotal role in the functionality, safety, and efficiency of electric vehicles (EVs). Given the higher energy demands of EVs compared to internal combustion engine (ICE) vehicles, modern electric vehicles require up to three times more wiring than their traditional counterparts.

Wiring systems in EVs are classified into high-voltage and low-voltage harnesses. High-voltage harnesses are critical for battery packs, AC-DC charging, and the main propulsion system, while low-voltage harnesses power infotainment, dashboard electronics, sensors, and cabin systems.

Segmental Highlights

By Vehicle Type: The passenger vehicle segment dominates due to higher feature integration, which demands more complex wiring systems.
By Propulsion Type: Battery Electric Vehicles (BEVs) lead the segment, growing at a CAGR of 28.01%, driven by full electrification and the phasing out of ICE engines.
By Product Type: The low-voltage harness segment holds the largest share, powering essential in-cabin functions and electronics.
By Material Type: Copper remains the dominant material, preferred for its flexibility and conductivity.
By Component: Wires are the largest component segment, forming the structural and functional backbone of EVs.
By Application: The high-voltage battery harness segment is expected to grow the fastest, owing to increasing battery capacities and range expectations.

Key Players in the Market

Sumitomo Corporation
Continental AG
Leoni AG
Fujikura Ltd.
Aptiv PLC
Kromberg & Schubert GmbH
TE Connectivity
Lear Corporation
SINBON Electronics Co. Ltd.
Coroplast Group, among others.

Regional Insights

China currently holds the largest market share and is expected to grow at a CAGR of 30.23% over the forecast period. The country's abundant access to raw materials (copper and bauxite), combined with its low labor costs and presence of local giants like THB Group and Deren Electronics, position it as a global leader in wiring harness production.

Asia-Pacific and Japan are witnessing steady growth due to natural resource availability and a cost-effective labor force. However, lack of robust EV infrastructure in some countries may impede growth in the short term.

Looking Ahead

The global wiring harnesses and connectors market is on the brink of exponential growth, driven by innovations in materials, increased EV penetration, and regional manufacturing capabilities. Industry players that embrace lightweight solutions, invest in automation, and develop next-gen high-voltage harnesses are poised to gain a competitive edge in this fast-evolving landscape.

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Frequently Asked Questions (FAQs)

1. How big is the wire harness market?

The global wire harness market is experiencing rapid growth due to increased adoption of electric and hybrid vehicles, as well as the rising integration of advanced electronics across various industries. Specifically, the wiring harnesses and connectors for electric vehicles market was valued at USD 2.99 billion in 2022 and is projected to reach USD 19.79 billion by 2031, growing at a CAGR of 23.37% during the forecast period. This surge is being driven by the ongoing electrification of transportation, demand for lightweight and efficient wiring solutions, and the global push toward sustainability. As electric vehicles become mainstream, the size of the wiring harness market is expected to expand exponentially. This makes it one of the most vital and fast-growing components in modern vehicle architecture.

2. In which industries is a wiring harness used?

Wiring harnesses are used in a wide range of industries beyond just automotive. While automotive and electric vehicles (EVs) remain the largest consumers, aerospace, industrial machinery, telecommunications, consumer electronics, and healthcare equipment industries also heavily rely on wiring harnesses. These harnesses are critical in organizing and securing wires that transmit electrical signals or power across complex systems. For example, in the aerospace sector, harnesses are used in flight control systems, while in medical devices, they power diagnostic and monitoring equipment. The rising complexity and automation across sectors have made wiring harnesses indispensable in ensuring connectivity, reliability, and safety.

3. What does the wiring harness in an electric vehicle (EV) serve as?

In an electric vehicle (EV), the wiring harness acts as the nervous system, enabling communication and power transfer across all electronic components. It connects the battery, motors, onboard chargers, infotainment systems, sensors, lighting, and HVAC units. With EVs relying on both high-voltage and low-voltage systems, the harness ensures safe and efficient transmission of electric current while minimizing energy losses. A single EV can contain several kilometers of wiring, and the harness must be engineered to withstand thermal, mechanical, and environmental stresses. Essentially, the harness is key to enabling the functionality, safety, and performance of the entire vehicle.

4. What are the different types of wire harness connectors?

Wire harness connectors come in a variety of types, each designed to meet specific application needs in terms of voltage, environment, and durability. Common types include blade connectors, ring terminals, bullet connectors, quick-disconnect connectors, weatherproof connectors, and multi-pin connectors. In EVs, high-voltage connectors are specially designed with safety locks and insulation to handle high current loads, while low-voltage connectors are used for infotainment and sensor systems. Additionally, sealed connectors are used in environments exposed to moisture, dust, or extreme temperatures. Choosing the right connector is crucial for ensuring long-term electrical performance, minimizing signal interference, and avoiding connection failures.

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