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US Automotive Secondary Wiring Harness Market

ID: MRFR/AT/11618-HCR
100 Pages
Garvit Vyas
October 2025

US Automotive Secondary Wiring Harness Market Research Report By Application (Cabin, Door Harness, Engine, Electronic Parking Brakes, Airbag Harness, Electronic Gear Shift System) and By Vehicle Type (ICE, EV) - Forecast to 2035

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US Automotive Secondary Wiring Harness Market Infographic
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US Automotive Secondary Wiring Harness Market Summary

As per analysis, the US automotive secondary wiring harness market is projected to grow from USD 0.896 Billion in 2025 to USD 1.76 Billion by 2035, exhibiting a compound annual growth rate (CAGR) of 6.86% during the forecast period (2025 - 2035).

Key Market Trends & Highlights

The US automotive secondary wiring harness market is poised for growth driven by technological advancements and evolving consumer preferences.

  • The Body Wiring Harness segment remains the largest contributor to the market, reflecting its critical role in vehicle functionality.
  • The Engine Wiring Harness segment is experiencing rapid growth, driven by increasing complexity in engine management systems.
  • Passenger Vehicles dominate the market, while Electric Vehicles are emerging as the fastest-growing segment due to rising environmental awareness.
  • Key market drivers include the growing demand for Electric Vehicles and technological advancements in automotive manufacturing.

Market Size & Forecast

2024 Market Size 0.848 (USD Billion)
2035 Market Size 1.76 (USD Billion)
CAGR (2025 - 2035) 6.86%

Major Players

Delphi Technologies (US), Lear Corporation (US), Yazaki Corporation (JP), Sumitomo Electric Industries (JP), Aptiv PLC (IE), Marelli Holdings Co., Ltd. (JP), Kostal Group (DE), TE Connectivity Ltd. (CH), Furukawa Electric Co., Ltd. (JP)

US Automotive Secondary Wiring Harness Market Trends

The US automotive secondary wiring harness market is currently experiencing a dynamic evolution, driven by advancements in automotive technology and increasing consumer demand for enhanced vehicle performance. Secondary wiring harnesses, which serve as critical components in connecting various electrical systems within vehicles, are becoming more sophisticated. This trend is largely influenced by the growing integration of electronic features in modern automobiles, such as advanced driver-assistance systems and infotainment technologies. As manufacturers strive to improve vehicle efficiency and safety, the demand for high-quality wiring harnesses is expected to rise, reflecting a shift towards more complex electrical architectures. Moreover, the market landscape is shaped by regulatory changes and environmental considerations. The push for electric vehicles and stricter emissions standards necessitates the development of innovative wiring solutions that can support new powertrains and energy management systems. Consequently, manufacturers are likely to invest in research and development to create lightweight, durable, and efficient wiring harnesses. This focus on sustainability and performance enhancement may lead to collaborations between automotive companies and technology providers, fostering a more integrated approach to vehicle design and production. Overall, the US automotive secondary wiring harness market appears poised for growth, driven by technological advancements and evolving consumer preferences.

Integration of Advanced Technologies

The US automotive secondary wiring harness market is witnessing a notable trend towards the integration of advanced technologies. As vehicles become increasingly equipped with sophisticated electronic systems, the demand for wiring harnesses that can accommodate these innovations is rising. This includes features such as connectivity, automation, and enhanced safety systems, which require more complex wiring solutions.

Focus on Lightweight Materials

Another emerging trend in the US automotive secondary wiring harness market is the emphasis on lightweight materials. Manufacturers are exploring options that reduce the overall weight of wiring harnesses, which can contribute to improved fuel efficiency and performance. This shift aligns with broader industry goals of enhancing vehicle efficiency and reducing environmental impact.

Sustainability and Environmental Compliance

Sustainability is becoming a critical consideration in the US automotive secondary wiring harness market. As regulations surrounding emissions and environmental impact tighten, manufacturers are increasingly focused on developing eco-friendly wiring solutions. This includes the use of recyclable materials and processes that minimize waste, reflecting a commitment to environmental responsibility.

Market Segment Insights

By Application: Body Wiring Harness (Largest) vs. Engine Wiring Harness (Fastest-Growing)

In the US automotive secondary wiring harness market, the Body Wiring Harness segment holds the largest share, providing comprehensive wiring solutions for essential vehicle functions such as lights, windows, and doors. Following closely, the Chassis Wiring Harness and Engine Wiring Harness segments also play critical roles. While the Chassis Wiring Harness caters to the structural aspects of vehicles, the Engine Wiring Harness is increasingly pivotal due to advancements in engine technology and electrification, shaping the landscape of automotive wiring solutions.

Body Wiring Harness (Dominant) vs. Engine Wiring Harness (Emerging)

The Body Wiring Harness segment is dominant in the US automotive secondary wiring harness market, characterized by its extensive integration of electrical systems within vehicles. This harness not only supports essential functions but also enhances the overall safety and comfort of the driving experience. Conversely, the Engine Wiring Harness is an emerging segment, driven by the shift toward more sophisticated engine designs and hybrid technologies. Its growth reflects the need for improved connectivity and control, demonstrating the importance of reliable wiring solutions in modern automotive engines.

By End Use: Passenger Vehicles (Largest) vs. Electric Vehicles (Fastest-Growing)

In the US automotive secondary wiring harness market, the distribution of end use reveals that passenger vehicles hold the largest share, driven by the extensive demand from consumers for personal transportation. Commercial vehicles also contribute significantly to the market, predominantly fueled by logistics and transportation needs across various industries. However, electric vehicles are rapidly gaining traction due to rising environmental consciousness and government initiatives promoting sustainable transportation solutions.Unpacking the growth trends, the rise of electric vehicles is significantly altering the landscape of automotive wiring harnesses. As more manufacturers pivot towards EV production, there's an increased requirement for specialized wiring solutions that address higher voltage systems and improved efficiency. Additionally, advancements in technology and a push for automated features in passenger and commercial vehicles augment the demand for complex wiring systems tailored to modern automotive needs.

Passenger Vehicles: Dominant vs. Electric Vehicles: Emerging

Passenger vehicles stand as the dominant segment in the US automotive secondary wiring harness market, attributed to their extensive application and established production lines. The wiring harnesses for these vehicles are designed to cater to various electronics, safety features, and infotainment systems, making them intricate and essential for reliability. In contrast, electric vehicles are emerging as a vital force in the market, necessitating advanced wiring harness solutions to support innovative technology such as battery management systems and electric drivetrains. As the demand for electric cars continues to rise fueled by changing consumer preferences and regulatory support, manufacturers are adapting to meet the unique requirements of this segment, positioning electric vehicles as a future-forward growth driver.

By Material Type: Copper (Largest) vs. Aluminum (Fastest-Growing)

In the US automotive secondary wiring harness market, the material type segment showcases a competitive landscape with copper holding the largest market share due to its excellent conductivity and reliability. Copper wiring is extensively used in vehicles for its proven durability and performance. Aluminum, on the other hand, is gaining traction due to its lightweight properties, making it an attractive alternative in the pursuit of fuel efficiency and reduced emissions. Plastic and rubber are also essential, primarily used for insulation and protection, but they do not command the same market share as metal conductors.

Copper (Dominant) vs. Aluminum (Emerging)

Copper wires dominate the automotive secondary wiring harness market due to their superior electrical conductivity and thermal resistance, which are crucial in ensuring efficient vehicle performance. Even though it is heavier compared to alternatives, the proven reliability of copper makes it the preferred choice among manufacturers. Conversely, aluminum represents an emerging segment, favored for its lightweight characteristics conducive to energy efficiency. As regulatory pressures increase for fuel economy and reduced weight in vehicles, aluminum's market presence is growing, supported by innovations in manufacturing processes that enhance its conductivity and performance. Both materials play vital roles in the automotive industry's evolution towards more efficient and sustainable vehicles.

By Connector Type: Sealed Connectors (Largest) vs. Multi-pin Connectors (Fastest-Growing)

In the US automotive secondary wiring harness market, the segment distribution reveals that Sealed Connectors hold the largest market share, driven by their reliability and protection against environmental factors. On the other hand, Multi-pin Connectors are experiencing rapid growth due to the increasing demand for compact yet efficient wiring solutions in modern vehicles. Unsealed Connectors, while present, have a smaller share as manufacturers shift towards more protective options.

Sealed Connectors (Dominant) vs. Multi-pin Connectors (Emerging)

Sealed Connectors are recognized for their robustness and durability, making them a dominant choice in the automotive sector, especially in harsh environments. They provide excellent sealing against moisture and dust, which is crucial for vehicle longevity. Multi-pin Connectors, while emerging in terms of market share, are gaining traction due to their ability to reduce wiring complexity and enhance connectivity with multiple signals in a single unit. This is particularly beneficial for electric and hybrid vehicles that require efficient wiring for various systems. The growing trend towards electrification and automation in vehicles positions Multi-pin Connectors as a vital component of modern automotive advancements.

By Vehicle Type: Internal Combustion Engine (Largest) vs. Battery Electric Vehicles (Fastest-Growing)

In the US automotive secondary wiring harness market, the segment distribution is characterized by a strong presence of Internal Combustion Engine (ICE) vehicles, which hold the largest share due to their long-established market dominance and widespread adoption. Conversely, Battery Electric Vehicles (BEVs) are rapidly gaining traction, reflecting significant shifts in consumer preferences and regulatory support for electrification. Hybrid vehicles occupy a middle ground, combining aspects of both ICE and BEV technologies, which allows for gradual market penetration alongside the increasing popularity of fully electric models. Growth trends within this segment are heavily influenced by technological advancements and changing consumer behavior towards more sustainable options. The shift towards BEVs is accelerated by environmental regulations, advancements in battery technology, and a growing network of charging infrastructure. As automakers invest heavily in electric mobility solutions, the demand for secondary wiring harnesses tailored to these vehicles is set to increase significantly, positioning both ICEs and BEVs at contrasting ends of the market spectrum while recognizing hybrids as a transitional solution.

Internal Combustion Engine (Dominant) vs. Battery Electric Vehicles (Emerging)

The Internal Combustion Engine (ICE) segment remains dominant in the US automotive secondary wiring harness market, characterized by its reliability and extensive service network. ICE vehicles are built on decades of mature technology, which ensures a solid demand for replacements and aftermarket services. In contrast, Battery Electric Vehicles (BEVs) are emerging as a powerful force in the market, driven by heightened consumer interest in sustainability and growing investments from major automakers. BEVs rely on advanced wiring harnesses designed for high-voltage applications and complex electrical architectures, showcasing their innovative features for enhanced performance and connectivity. As regulatory pressure mounts and consumer awareness of climate issues grows, BEVs represent not just a trend but a transformative shift in the automotive landscape.

Get more detailed insights about US Automotive Secondary Wiring Harness Market

Key Players and Competitive Insights

The automotive secondary wiring harness market is characterized by a competitive landscape that is increasingly shaped by innovation, strategic partnerships, and a focus on sustainability. Key players such as Delphi Technologies (US), Lear Corporation (US), and Aptiv PLC (IE) are actively pursuing strategies that enhance their market positioning. Delphi Technologies (US) emphasizes technological advancements in electric vehicle (EV) applications, while Lear Corporation (US) focuses on expanding its product portfolio to include smart wiring solutions. Aptiv PLC (IE) is leveraging its expertise in software and connectivity to drive digital transformation within the sector. Collectively, these strategies indicate a shift towards more integrated and technologically advanced wiring solutions, which are essential for meeting the evolving demands of the automotive industry.

In terms of business tactics, companies are increasingly localizing manufacturing to reduce lead times and enhance supply chain resilience. This approach is particularly relevant in a moderately fragmented market where the collective influence of key players is significant. The competitive structure allows for both established firms and emerging players to coexist, fostering an environment ripe for innovation and collaboration. Supply chain optimization remains a critical focus, as companies seek to mitigate risks and improve operational efficiency.

In November 2025, Lear Corporation (US) announced a strategic partnership with a leading EV manufacturer to develop advanced wiring harness systems tailored for next-generation electric vehicles. This collaboration is poised to enhance Lear's capabilities in producing lightweight and efficient wiring solutions, aligning with the industry's shift towards electrification. The partnership underscores Lear's commitment to innovation and positions the company favorably in a rapidly evolving market.

In October 2025, Aptiv PLC (IE) unveiled a new suite of software solutions designed to enhance the functionality of its wiring harness systems. This initiative aims to integrate artificial intelligence (AI) and machine learning into the design and manufacturing processes, potentially streamlining operations and improving product performance. The introduction of these technologies reflects Aptiv's strategic focus on digitalization and its intent to lead in the smart mobility space.

In September 2025, Delphi Technologies (US) expanded its manufacturing capabilities by investing in a new facility dedicated to producing high-voltage wiring harnesses for electric vehicles. This investment not only signifies Delphi's commitment to supporting the growing EV market but also enhances its competitive edge by increasing production capacity and efficiency. The move is indicative of a broader trend towards sustainability and the need for specialized components in the automotive sector.

As of December 2025, the automotive secondary wiring harness market is witnessing trends that emphasize digitalization, sustainability, and the integration of AI technologies. Strategic alliances are becoming increasingly important, as companies recognize the value of collaboration in driving innovation and enhancing product offerings. The competitive landscape is shifting from traditional price-based competition to a focus on technological differentiation and supply chain reliability. This evolution suggests that future competitive advantages will hinge on the ability to innovate and adapt to the changing needs of the automotive industry.

Key Companies in the US Automotive Secondary Wiring Harness Market market include

Industry Developments

In recent developments within the US Automotive Secondary Wiring Harness Market, significant growth has been observed, primarily driven by the rising demand for electric vehicles and advancements in automotive technology. Several key players, including Bosch, Yazaki Corporation, Delphi Technologies, and Aptiv, are investing heavily in Research and Development to enhance the durability and efficiency of wiring harness systems. In September 2023, Delphi Technologies announced a strategic partnership with General Motors to develop innovative wiring solutions aimed at improving electric vehicle performance. 

Furthermore, Lear Corporation has been expanding its manufacturing capabilities, responding to the surge in electric vehicle production. Notably, in October 2022, Ford Motor completed the acquisition of a small tech firm focused on automotive wiring technology to bolster its expertise in this area. Moreover, TE Connectivity has been actively increasing its market footprint through collaborations with multiple automotive manufacturers in the U.S. Market valuation is positively impacted by these efforts, reflecting a growing emphasis on integrating advanced technologies in automotive manufacturing.

Over the last few years, the sector has also faced challenges, including supply chain disruptions, which have compelled companies to rethink their procurement and production strategies.

Future Outlook

US Automotive Secondary Wiring Harness Market Future Outlook

The US automotive secondary wiring harness market is projected to grow at a 6.86% CAGR from 2024 to 2035, driven by technological advancements and increasing vehicle electrification.

New opportunities lie in:

  • Integration of smart wiring harness solutions for enhanced vehicle connectivity.
  • Development of lightweight materials to improve fuel efficiency and performance.
  • Expansion into electric vehicle markets with specialized wiring harness designs.

By 2035, the market is expected to be robust, reflecting substantial growth and innovation.

Market Segmentation

US Automotive Secondary Wiring Harness Market End Use Outlook

  • Passenger Vehicles
  • Commercial Vehicles
  • Electric Vehicles

US Automotive Secondary Wiring Harness Market Application Outlook

  • Body Wiring Harness
  • Chassis Wiring Harness
  • Engine Wiring Harness
  • Dashboard Wiring Harness

US Automotive Secondary Wiring Harness Market Vehicle Type Outlook

  • Internal Combustion Engine
  • Hybrid Vehicles
  • Battery Electric Vehicles

US Automotive Secondary Wiring Harness Market Material Type Outlook

  • Copper
  • Aluminum
  • Plastic
  • Rubber

US Automotive Secondary Wiring Harness Market Connector Type Outlook

  • Sealed Connectors
  • Unsealed Connectors
  • Multi-pin Connectors

Report Scope

MARKET SIZE 20240.848(USD Billion)
MARKET SIZE 20250.896(USD Billion)
MARKET SIZE 20351.76(USD Billion)
COMPOUND ANNUAL GROWTH RATE (CAGR)6.86% (2024 - 2035)
REPORT COVERAGERevenue Forecast, Competitive Landscape, Growth Factors, and Trends
BASE YEAR2024
Market Forecast Period2025 - 2035
Historical Data2019 - 2024
Market Forecast UnitsUSD Billion
Key Companies ProfiledDelphi Technologies (US), Lear Corporation (US), Yazaki Corporation (JP), Sumitomo Electric Industries (JP), Aptiv PLC (IE), Marelli Holdings Co., Ltd. (JP), Kostal Group (DE), TE Connectivity Ltd. (CH), Furukawa Electric Co., Ltd. (JP)
Segments CoveredApplication, End Use, Material Type, Connector Type, Vehicle Type
Key Market OpportunitiesIntegration of advanced materials and smart technologies in the US automotive secondary wiring harness market.
Key Market DynamicsRising demand for lightweight materials drives innovation in the US automotive secondary wiring harness market.
Countries CoveredUS

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FAQs

What is the expected market size of the US Automotive Secondary Wiring Harness Market in 2024?

The US Automotive Secondary Wiring Harness Market is expected to be valued at 596.8 million USD in 2024.

What is the projected market size of the US Automotive Secondary Wiring Harness Market by 2035?

By 2035, the market is projected to reach 1452.8 million USD.

What is the expected CAGR for the US Automotive Secondary Wiring Harness Market from 2025 to 2035?

The market is expected to grow at a CAGR of 8.424 percent from 2025 to 2035.

Which application segment dominates the US Automotive Secondary Wiring Harness Market?

The Engine application segment is set to hold significant market value, projected at 180.0 million USD in 2024 and 420.0 million USD in 2035.

Who are the major players in the US Automotive Secondary Wiring Harness Market?

Key players include Bosch, Yazaki Corporation, Delphi Technologies, Aptiv, Lear Corporation, and Tesla, among others.

What is the expected market value for the Cabin application in the US Automotive Secondary Wiring Harness Market by 2035?

The Cabin application segment is expected to be valued at 360.0 million USD by 2035.

How much is the Door Harness application segment valued at in 2024?

The Door Harness segment is valued at 120.0 million USD in 2024.

What are the projected values for the Electronic Parking Brakes application from 2024 to 2035?

This segment is projected to increase from 90.0 million USD in 2024 to 220.0 million USD in 2035.

What growth opportunities exist within the US Automotive Secondary Wiring Harness Market?

Emerging trends in electrification and increased safety regulations will drive growth opportunities in the market.

What impact do current global scenarios have on the US Automotive Secondary Wiring Harness Market?

Current global conditions can influence supply chains and raw material costs affecting market dynamics.

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