Custom Car Wire Harnesses for Power, Signal, and Vehicle System Integration

Modern vehicles contain over 40 harnesses, 700+ connectors, and more than 3,000 wires spanning up to 2.5 miles.

As a specialized automotive wiring harness manufacturer, WellPCB delivers electric power, signal routing, and automotive cable assembly solutions between ECUs, sensor networks, battery modules, and lighting systems in internal combustion, hybrid, and electric vehicles.

WellPCB is an automotive wiring harness manufacturer that produces custom wire harness assemblies in-house using RoHS-compliant automotive wire, flame-retardant cable sleeving, and sealed connectors for harsh automotive environments.

Production supports wire gauges from 40AWG to 120 mm², high-voltage routing for inverter and battery lines, and twisted-pair signal channels for CAN bus and data control.

RoHS-compliant wire, flame-rated cable jackets, and sealed connectors.
Automotive wiring harness assembly on form boards with crimped terminals and wire marking.
100% continuity and pull-force testing on all car wiring harness assemblies.

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Automotive Wiring Harness Manufacturer for Routing Accuracy and Electrical Reliability

Automotive wiring harnesses manage the routing of power and data between Electronic Control Units (ECUs), control modules, lighting assemblies, and Electric Vehicle (EV) subsystems across combustion, hybrid, and electric vehicles.

These wiring systems support integrated signal paths and load-bearing conductors throughout the vehicle body and drivetrain.

WellPCB manufactures custom wire harness assemblies based on client-supplied schematics, pinout maps, and netlists.

Each wiring harness for car applications is fixture-assembled with length-matched conductors, grouped routing, and calibrated crimp terminations.

We use halogen-free automotive wire, flame-retardant sleeving, and moisture-resistant connector systems that are rated for thermal cycling, abrasion, and vibration.

IATF 16949 Certified Automotive Wiring Harness Manufacturer Capabilities

WellPCB manufactures automotive wiring harnesses in-house using calibrated equipment, fixture-based routing, and RoHS-compliant wire and cable. Our comprehensive wiring harness services cover every stage from conductor prep through final electrical testing. Each wire harness build is guided by OEM pinouts and BOMs, with process control covering conductor prep, terminal crimping, connector assembly, and electrical testing.

Wire Cutting, Stripping, and Length Processing

As an automotive wiring harness manufacturer, WellPCB processes automotive wire using programmable servo-controlled cut-and-strip machines. Conductor lengths from 50 mm to 2000 mm are prepared with insulation stripping tolerances of ±0.5 mm.

We support wire gauges from 40AWG to 120 mm² using XLPE, PVC, and silicone-jacketed types. Optical verification systems confirm cut length and strip depth before the wire is transferred to the automotive wiring harness assembly stations.

Terminal Crimping and Connector Assembly

Closed-barrel, open-barrel, and flag-style terminals are crimped using pneumatic or hydraulic presses fitted with calibrated applicator dies.

Crimp height is checked using micrometer tools, and all crimps are validated to meet minimum pull-force values according to SAE J2030 and OEM-specific specs.

Connector types include sealed and unsealed housings, with HVIL-compatible terminals supported for high-voltage wire harnesses. Supported systems include Sumitomo, Yazaki Corporation, Deutsch, Molex, JST, and TE Connectivity.

Harness Assembly on Fixture Boards

Each automotive harness is assembled on mechanical form boards designed from customer routing diagrams. Harness routes are laid using spot taping, branching fixtures, and sleeving paths.

Grouped wires are bundled using PVC or braided cable sleeving, with concentric layup applied to twisted pairs for EMI-sensitive subsystems. Final layout is verified against drawing overlay sheets or digital inspection systems.

High-Voltage and EV Harness Builds

WellPCB’s automotive wiring harness manufacturer expertise extends to high-voltage EV systems using orange XLPE-jacketed cable rated for 600 V, with conductor sizes from 2.5 mm² to 6 mm².

Insulation resistance is tested to 100 MΩ at 500 VDC, and dielectric withstand testing is conducted at up to 1500 VDC for critical battery and inverter paths.

Protective sleeving includes fiberglass, silicone, and PET braided options. Cable routing incorporates bend radius validation and shielding continuity for charge and BMS modules.

Electrical Testing and Inspection

Each automotive harness undergoes 100% continuity testing using computer-controlled test benches matched to the harness pinout table. Isolation tests use hi-pot equipment at 500–1500 VDC, depending on the harness type.

Visual inspections include terminal seating, insulation stripping quality, and wire marking legibility, performed at 5x to 10x magnification.

Pull-test and crimp-height logs are recorded for each harness group and linked to serialized QC reports.

Traceability, Labeling, and Marking

All automotive wiring harnesses are serialized with barcoded labels, heat-shrink IDs, and batch metadata.

Labeling options include UV-rated inkjet, laser etch, or printed tags, depending on environmental class.

All wire and cable lots are tracked to supplier documentation and RoHS certificates. Operator IDs, timestamps, and final test logs are attached to each production record for traceable release.

Production Scalability & Prototyping

WellPCB supports low-volume runs starting from a single unit, with scalable production for over 10,000 harnesses per part number.

Prototypes are built in 2 to 3 weeks, depending on connector availability and BOM complexity. We source wire, cable, and terminal materials through global cable suppliers, including Digi-Key, Mouser, and Avnet, with full material traceability and component substitution support.

Why Choose WellPCB as Your
Automotive Wiring Harness Manufacturer?

WellPCB is an assembly and wire harness manufacturer that builds all automotive wiring harnesses in-house using fixture-based routing, calibrated press crimping, and 100% test coverage.

Our process control supports high-volume builds with consistent conductor layout, verified terminal compression, and RoHS-traceable wire and cable materials, following IATF 16949 and IPC/WHMA-A-620 Class 3 standards.

All automotive wiring harnesses are built internally using fixture-based assembly, controlled crimp stations, and form boards mapped to OEM routing tables.

This eliminates variability caused by third-party shops and ensures that every wire harness meets consistent mechanical and electrical standards from raw materials to the design.

With over 10 years of experience, we serve global OEMs and aftermarket clients that require tight build tolerances, reliable lead times,

and full traceability.

We specialize in translating complex pinouts, connector maps, and breakout branches into repeatable harness builds, including support for high-voltage systems.

Our supply chain integrates with global cable and component distributors, including Mouser, Avnet, and Digi-Key, giving us fast access to OEM-grade wire

or cable, terminals, and connector families.

This allows us to hit prototype and production targets without BOM delays or substitutions.

Our manufacturing adheres to strict IPC visual criteria with documented wire marking, terminal crimp height, and pull-force validation.

Every high-quality wire harness undergoes 100% continuity testing and mechanical inspection using calibrated tools and optical gauges.

We support both prototype and production builds from 1 to 10,000+ units per harness design.

Whether the application is engine harnessing, dashboard cable assemblies, or EV battery interconnects, we deliver reliable products built for automotive-grade durability.

In addition to traditional harnesses, we manufacture overmolded and wrapped cable assemblies and wire harnesses with flame-retardant sleeving and

sealed connectors.

Routing structures are built to meet EMI shielding, thermal rating, and bend radius constraints for passenger car and off-road systems.

What Types of Vehicles and Harness Builds does WellPCB Support?

WellPCB supplies automotive OEM wire harness solutions to OEMs, Tier 1 suppliers, and aftermarket manufacturers building for electric, hybrid, combustion, and specialty vehicle platforms.

We manufacture to your specifications across full production volumes, including builds for EV drivetrains, combustion engines, off-road equipment, ADAS systems, and low-volume service replacement harnesses.

Electric Vehicles and Hybrid Platforms

We build high-voltage wire harnesses for electric vehicles (EVs) and hybrids, including interconnects for the battery, inverter, battery management system (BMS), and charging module.

Assemblies use XLPE-jacketed orange automotive wire, fiberglass sleeving, and terminals rated to 600 VDC.

Each automotive harness is tested for dielectric withstand, EMI shielding, and thermal stability across critical electric power subsystems.

Why Is HDI Technology Becoming So Popular in the Automotive Industry

Aftermarket and Service Replacement Automotive Harnesses

WellPCB manufactures low-volume wire harnesses for automobile manufacturers and component suppliers needing service replacements or retrofit builds. We build from

OEM drawings, legacy prints, or reverse-engineered schematics, supplying manufacturers worldwide with assemblies matched to legacy platforms.

Harnesses are built using batch-tracked wire and cable, and terminated with OEM-specified connectors from verified sources.

Our Automotive Wiring Harness Process

WellPCB manufactures every wiring harness for car applications using a defined technical workflow that begins with customer-supplied drawings and ends with serialized, test-validated harnesses ready for integration.

Our process supports wire harness drawing reviews, BOM traceability, in-line inspection, and scalable transition from prototype to final product manufacturing.

Production begins with a review of the electrical schematics, connector pinout tables, netlists, and length constraints that you have supplied. Our team checks

for missing mating diagrams, terminal compatibility issues, or ambiguous routing paths before release to production. BOM line items are validated for RoHS status, availability, and sourcing from authorized suppliers.

Automotive wiring harnesses are mapped onto digital routing tables and fixture layout files. Each wire is assigned a defined path, connector cavity, and

mechanical branch point. Twisted pairs, CAN bus lines, and shielded signal paths are noted for EMI isolation. This step establishes the routing logic required for stable power and data transmission across vehicle distribution systems.

Design-for-manufacture feedback is provided when routing conflicts, material mismatches, or terminal seating limitations are identified.

We confirm the specific wire gauges, jacket types, and sleeve materials suitable for a given bend radius, abrasion class, and insulation rating. Final materials are documented for traceability and released to kitting.

Early-stage builds are manufactured as functional samples for layout validation, connector engagement testing, and thermal cycling trials.

Pull force, continuity, and dielectric withstand tests are performed on each prototype automotive harness. Custom cable assembly variants, such as overmolded or shielded builds, are also validated at this stage.

All harnesses are built on form boards, with wire cut, stripped, crimped, and loaded using calibrated tools. Terminals are checked for crimp height and insertion depth. Branches are

sleeved, taped, or jacketed per vehicle zone, and assemblies are serialized for downstream traceability. This is the core of our harness manufacturing process.

Each automotive harness is tested for 100% continuity and insulation resistance using test fixtures matched to the routing table. Mechanical checks include crimp pull testing,

cavity retention, and bend compliance. Visual inspections confirm jacket integrity, wire marking, connector orientation, and clip placement using magnification.

Harnesses are packaged in anti-static or padded containers, with routing diagrams, labeling sheets, and inspection checklists enclosed. Export cartons are labeled with harness ID, part

number, and lot trace code. Shipping logistics align with OEM or Tier 1 delivery cycles to support staged builds and assembly-line integration.

What Types of Wire and Insulation Materials do You Use?

In every wiring harness for car purposes, WellPCB uses stranded copper automotive wire with RoHS-compliant insulation systems including XLPE, PVC, silicone, and fiberglass.

All wire and cable are specified by conductor class, strand count, and voltage rating, supporting high-voltage systems, engine compartments, and interior harness builds across EV, hybrid, and combustion vehicle types.

All automotive harnesses are built with stranded copper automotive wire in 19 to 65 strand configurations, optimized for vibration, routing flexibility, and electrical conductivity.

We supply specific wire types, including bare copper, tinned copper, and silver-plated copper, depending on current capacity, corrosion resistance, and temperature rating.

Standard sizes from 0.22 mm² to 6 mm² are selected based on voltage drop analysis, terminal compatibility, and harness length.

Aluminum is not used unless explicitly requested and validated by OEM.

We use RoHS-compliant insulation materials including XLPE, PVC, silicone rubber, and thermoplastic elastomers. XLPE insulation is applied to high-voltage wire harnesses for battery and inverter modules, with a dielectric withstand of up

to 600 VDC and a temperature tolerance of up to 150 °C.

Interior harnesses use flame-retardant PVC with UL compliance, while underhood circuits may require silicone jackets for heat and fluid resistance. All wire and cable are batch-traceable by insulation rating and material family.

Automotive harness segments requiring EMI suppression or mechanical protection are sleeved with PET braid, fiberglass tubing, or foil shielding.

These layers are applied to electric power

cables, sensor networks, and CAN bus lines routed through high-interference or flex-critical zones.

Sleeving is selected based on abrasion class, fluid exposure, and installation constraints, with wrap angles and overlap specified per drawing to prevent coverage gaps.

For data lines, impedance consistency and shielding termination points are documented during harness manufacturing.

Each wire is assigned a jacket color, stripe pattern, and unique identifier according to the Bill of Materials (BOM) and routing table.

Wire marking methods include UV-cured

inkjet, laser etching, and heat-shrink label application, all of which are verified for readability post-routing.

Cavity assignment codes are applied during conductor prep, ensuring downstream traceability through crimping, insertion, and final electrical test.

All printed identifiers follow OEM or customer-specified part number systems and polarity conventions.

What are the Design Considerations for Automotive Wire Harnesses?

Designing automotive wiring harnesses requires optimization for electrical performance, packaging constraints, signal integrity, and mechanical durability. Each wiring harness for car applications must maintain reliable function under voltage load, EMI exposure, and mechanical stress throughout its installed service life.

Voltage, current, and impedance must be specified for each circuit. Wire gauge is then selected based on allowable voltage drop, conductor length, and

system load.

This must follow ISO9001 or IATF16949 limits to prevent overheating or signal degradation.

Once conductor and insulation requirements are defined, termination interfaces must meet matching electrical and mechanical specifications to support reliable mating under load.

EMI exposure must be controlled through the use of shielding, routing separation, and signal grouping.

Shielded conductors must provide at least 90 percent coverage and maintain resistance below 1.5 ohms per meter to suppress interference.

After routing is locked, grounding paths must connect directly to the chassis or follow a star-return structure with resistance below 5 milliohms to meet IPC Class and IATF16949 functional safety guidelines for critical systems.

Mechanical support must be applied at all termination zones to prevent movement, pullout, or fatigue at the connector interface.

Grommets, backshells, or overmolded collars are used to isolate wires from flexing or load transfer.

These features must be validated through pull-force testing, with a minimum retention of 50 newtons for signal conductors and 100 newtons for power branches.

Automotive wiring harness geometry must fit within the available space without contact, compression, or thermal risk.

Bend radius must follow minimums of 10× cable diameter for signal and 12× for power conductors.

Once geometry is confirmed, the form board must verify each mounting point, routing angle, and shield overlap to meet production fit and clearance constraints.

Clearance must be maintained between harnesses and structural obstacles across all routing paths.

Connectors should not be placed within 50 mm of hard bends, mounting brackets, or restricted-access areas.

These constraints must be validated in digital mockups, followed by physical confirmation of installation access, tool reach, and one-hand service positioning.

Cut lengths must remain within ±1 mm for signal and ±2 mm for power conductors to prevent misalignment or seal failure.

After wire segments are cut, coverings are selected based on temperature exposure (≥125 °C), abrasion cycles (≥1000), and fluid contact using conduit, loom, or tape materials that meet environmental requirements.

How to Order Your Automotive Wiring Harness

Submit Your Design

Send us your design details (Drawing or Detailed Specifications).

Get a Fast Quote

Once your design and specs are received, a fast quote will be sent to you within 24 hours.

Confirm Order & Make Payment

When the quotation is approved, please send the PO or order confirmation, we will proceed with the production after receiving your payment.

Arrange Production & Inspection

Before production, our technical team will review all details of the drawing/specs again. If everything is OK, the order will start. We'll keep you updated throughout the manufacturing process. After the production is completed, the products will be 100% inspected.

Packaging & Delivery

When completed, your order will be carefully packed and shipped to you, with shipping documents and tracking information provided.

WellPCB is trusted by millions of
businesses and innovators.

Why Choose WellPCB as Your Wire Harness Manufacturer?

WellPCB stands out among USA wire harness manufacturers by delivering superior quality, advanced solutions, and unmatched reliability. With years of experience serving global markets, WellPCB has earned a reputation as one of the top wire harness manufacturers in the USA.

WellPCB specializes in custom wire harnesses for complex electronic and industrial applications. You can order these assemblies with $100 off using our special offer—delivering high-quality, tailor-made harnesses at competitive rates for your most demanding projects.

Hommer Zhao

Founder and Chief Editor – Hommer Zhao

Welcome! I’m Hommer Zhao, the founder and Chief Editor of WellPCB. With years of experience in the PCB industry, I’m committed to making sure our content is both accurate and helpful. We’re proud to serve a growing community of over 4,000 customers worldwide, and our goal is to provide you with the best resources and support. Your satisfaction is our top priority, and we’re here to help you every step of the way!

Jesse Holland

Technical Manager – Jesse Holland

Hi, I’m Jesse Holland, an Engineer and Technical Manager at WellPCB. With years of experience in PCB design and engineering, I’m here to ensure that every project we work on meets the highest technical standards. I lead our team, focusing on precision and innovation, collaborating closely with clients to provide tailored solutions and expert guidance. Whether you’re facing a complex design challenge or need advice on technical aspects, I’m here to ensure your project is a success from start to finish.

Nathan Jensen

Purchasing Manager – Nathan Jensen

Hi, I’m Nathan Jenson, the Purchasing Manager at WellPCB. I’m responsible for sourcing the best materials and components to ensure our products meet the highest quality standards. With my extensive experience in procurement, I work closely with suppliers to secure reliable and cost-effective solutions while maintaining strong relationships to support our operations. I aim to ensure every project runs smoothly by providing the resources needed to deliver on time and to your satisfaction.

Emma

Sales Manager – Emma

Hey, I am Emma, sales manager at WellPCB. I studied electronic science and technology at university and have served customers for PCB and PCB Assembly service for several years. 
I enjoy communicating with customers and our technicians to solve problems, and customers always say, "It's great to have you onboard". 
It is my pleasure and honour to be helpful. Contact me now, and you'll know.

Bella and Cassiel

Sales Representatives – Bella and Cassiel

We’re Bella and Cassiel, your dedicated sales representatives at WellPCB. With our extensive knowledge of the PCB industry, we’re here to provide exceptional service and support. We take the time to understand your unique needs and are always ready to offer tailored solutions and advice. Whether you need product recommendations, assistance with your orders, or simply have a question, we’re here to ensure your experience is smooth and seamless at every step.

Mandy and Wendy

Sales Representatives – Mandy and Wendy

We’re Mandy and Wendy, your friendly sales representatives at WellPCB. Passionate about helping our customers, we bring a wealth of experience in the PCB industry to provide you with the best solutions and service. We take pride in building strong relationships with our clients, understanding their specific needs, and offering personalised support to ensure their satisfaction. Whether you’re looking for advice, product information, or assistance with any part of your order, we’re here to make your experience as smooth and efficient as possible.

Our Team

Our skilled engineers and technicians bring expertise and precision to every PCB assembly project. Committed to quality, efficiency, and innovation, our team ensures every order meets the highest UL, IPC, ROHS & REACH standards, delivering reliable solutions tailored to your needs.

Founder and Chief Editor – Hommer Zhao
Technical Manager – Jesse Holland
Purchasing Manager – Nathan Jensen
Sales Manager – Emma
Sales Representatives – Bella and Cassiel
Sales Representatives – Mandy and Wendy

All Wire Harness Services

Wiring Harness for Car Case Studies

Wiring Harness

Integrated wiring harness

Integrated wiring harness assemblies streamline power and signal distribution in sanitation vehicles, offering robust performance in harsh outdoor and washdown environments.

Specifications:

•Voltage: Up to 600V
•Temp Range: -40°C to +125°C
•Conductor: Stranded copper
•Insulation: XLPE or TPE
•Protection: Braided sleeving or corrugated tubing
•Sealing: IP67-rated connectors
•Standards: ISO 9001, RoHS, SAE J1128

Wiring Harness

Automobile Wire Harness

Connects engine, dashboard, lights, A/C, audio, airbags, and more—forming a reliable, complete electrical system for vehicle performance and safety.

Specifications:

•Voltage: 12V / 24V systems
•Temp Range: -40°C to +125°C
•Conductor: Stranded copper
•Insulation: PVC/XLPE
•Sheathing: Corrugated or braided
•Connectors: OEM-specific, sealed or unsealed
•Standards: ISO/TS 16949, SAE J1939, RoHS

worker,is,packing,a,wiring,harnesses,,production,line,,workflow.,automobile

PCB Assembly

Automotive Cable Assembly

Used in autonomous driving systems, infotainment, and advanced vehicle electronics, our cable assemblies ensure fast, stable signal and power transmission under demanding conditions.

Specifications:

•Voltage: 12V / 48V
•Signal Types: CAN, LVDS, USB, Ethernet
•Temp Range: -40°C to +125°C
•Conductor: Stranded copper
•Shielding: Foil/braid for EMI protection
•Jacket: TPE or XLPE
•Standards: IATF 16949, ISO 26262, RoHS

Client Feedback On Our Automotive Wiring Harnesses

As an R&D manager, I have had an outstanding experience working with WELL-PCB. For many years, our company has entrusted them with the production, assembly, and programming of the boards developed in our R&D unit, and they have consistently exceeded our expectations.

Their work is very impressively perfect. Today, when they check our company PCB board after assemble. They found a fake short point which many engineers has never found in the past years. But that is just designed so. The PCB board quality is excellent. Their service is also excellent.

My friend introduced WellPCB to me, the first try, a little look forward to. I ordered a 47*72 10ps PCB, and I can’t wait to receive my PCB. So I used expedited service and received my PCB in three days. I tested and soldered the PCB, Quality is really good, silkscreen, plating also great.

Automotive Wiring Harness FAQs

What certified flame-retardant insulation do you offer?

We offer IATF 16949:2016, ISO 9001:2015, UL, and ROHS-certified flame-retardant insulation for interior harness applications.

Do you support CAN bus wiring with EMI shielding?

Yes, we support CAN bus wiring if it’s clearly indicated on the provided customer drawings. This includes EMI shielding, including twisted pair layout, foil wrap, and defined shield termination paths.

How is dielectric withstand testing performed on high-voltage EV harnesses?

We apply high-voltage DC between conductors and shielding to verify insulation performance and detect breakdown or leakage. This test is typically performed up to 1500 VDC, depending on the harness specification, and confirms compliance with required dielectric strength before release to final product manufacturing.

Do you supply temperature-rated insulation for exhaust-adjacent harnesses?

Yes, we offer high-temperature wire and cable with XLPE, silicone, or fiberglass jackets rated up to 150 °C for routing near engine and exhaust components.

Custom Car Wire Harnesses for Power, Signal, and Vehicle System Integration

Automotive Wiring Harness Manufacturer for Routing Accuracy and Electrical Reliability

IATF 16949 Certified Automotive Wiring Harness Manufacturer Capabilities

Why Choose WellPCB as Your Automotive Wiring Harness Manufacturer?

In-House Production, No Outsourcing

10 Years of Experience in Harness Manufacturing

Sourcing Partnerships with Global Cable Suppliers

High-Quality Wire Harness Assembly Standards

Flexible Volumes from Prototype to Mass Production

Full Support for Automotive Cable Assemblies

What Types of Vehicles and Harness Builds does WellPCB Support?

Passenger Vehicles and Fleet Cars

Electric Vehicles and Hybrid Platforms

Heavy-Duty, Off-Road, and Agricultural Equipment

Autonomous and ADAS-Capable Platforms

Aftermarket and Service Replacement Automotive Harnesses

Our Automotive Wiring Harness Process

OEM Drawing & BOM Review

Routing Diagram and Pinout Mapping

DFM Feedback and Material Confirmation

Prototyping and Initial Sample Testing

Full-Scale Wire Harness Manufacturing

Electrical, Mechanical, and Visual Testing

Packaging, Documentation & Shipment

What Types of Wire and Insulation Materials do You Use?

Conductor Materials and Sizes

Primary Insulation Types

Secondary Sleeving and Shielding

Color Coding and Wire Marking

What are the Design Considerations for Automotive Wire Harnesses?

Electrical Performance and Safety

Electromagnetic Compatibility (EMI/EMC) and Grounding

Strain Relief

Physical Design and Routing

Routing Difficulty

Length, Tolerance, and Outer Covering

Submit Your Design

Get a Fast Quote

Confirm Order & Make Payment

Arrange Production & Inspection

Packaging & Delivery

WellPCB is trusted by millions of businesses and innovators.

Why Choose WellPCB as Your Wire Harness Manufacturer?

Hommer Zhao

Jesse Holland

Nathan Jensen

Emma

Bella and Cassiel

Mandy and Wendy

Our Team

All Wire Harness Services

Client Feedback On Our Automotive Wiring Harnesses

Hamid Reza Moshayedi

MikeZ

Warren Cliton

Automotive Wiring Harness FAQs

What certified flame-retardant insulation do you offer?

Do you support CAN bus wiring with EMI shielding?

How is dielectric withstand testing performed on high-voltage EV harnesses?

Do you supply temperature-rated insulation for exhaust-adjacent harnesses?

Automotive Wiring Harness Manufacturers You Can Trust

Your Trusted PCB Manufacturer & Wiring Harness Provider

Why Choose WellPCB as Your
Automotive Wiring Harness Manufacturer?

WellPCB is trusted by millions of
businesses and innovators.