Wire Harness Design Software and Tools: What Engineers Use
A practical comparison of KiCad, Altium Designer, Arcadia, CATIA V5 and SOLIDWORKS Electrical—and how engineers choose between schematic capture, dedicated harness engineering, 3D routing and manufacturing documentation.
Wire harness design software ranges from general schematic tools to dedicated harness engineering and 3D routing platforms. KiCad can support simpler connectivity documentation, Altium Designer includes a dedicated harness workflow inside an electronics design environment, Arcadia is purpose-built for harness engineering, and CATIA V5 or SOLIDWORKS Electrical become especially relevant when the harness must be developed inside the physical mechanical product.
Three Different Engineering Problems
Harness software should be selected according to the information the project must control.
Key Takeaways
The best tool depends on the engineering output—not simply on whether it can draw wires.
Schematic connectivity, detailed harness definition, 3D physical routing and manufacturing documentation are related but different engineering tasks.
General ECAD can be sufficient for simpler harnesses, while complex projects benefit from dedicated harness data and automation.
3D harness routing becomes more important when product geometry and installation space determine the physical harness path.
Regardless of software, manufacturing still requires controlled connectivity, dimensions, components, protection, testing and revision information.
01 · Fundamentals
What Is Wire Harness Design Software?
Wire harness design software is used to define some or all of the electrical connectivity, component data, physical harness layout, routing and manufacturing information required by a wire harness project.
The term does not describe one single type of engineering platform. A simple harness may only require a schematic and controlled drawing, while a large multi-branch harness may require dedicated electrical data, detailed physical layout and routing through a 3D mechanical product.
The right wire harness design software depends on whether the project primarily needs electrical connectivity definition, dedicated harness documentation, 3D physical routing or manufacturing-ready outputs.
Electrical Schematic Tools
Define connector symbols, pins, nets, signal names and electrical relationships. This may be sufficient for simple harness connectivity but does not automatically define the physical product.
Dedicated Harness ECAD
Adds harness-oriented data such as wires, cavities, terminals, seals, splices, branches, coverings, layouts, BOMs and manufacturing information.
3D Harness / MCAD
Develops the physical harness inside a vehicle, machine or product model so bundle routes, installation paths, mechanical space and physical lengths can be evaluated.
Schematic definition, dedicated harness engineering and 3D routing therefore solve connected—but different—engineering problems.
02 · Evaluation Criteria
What Do Engineers Actually Need From Wire Harness Design Software?
Before comparing individual software packages, engineers should define what information the project needs to control.
Electrical Connectivity
Connector pins, wire-to-wire relationships, circuit definitions, signal names and other electrical connections should be unambiguous.
Connector & Component Data
Connector housings, terminals, seals, locks and accessories may all need controlled part information.
Wire & Cable Data
Wire gauge, type, color, cable structure, shielding and identification may need to be represented in the engineering definition.
Splices & Branches
More complex harnesses may contain splices, junctions, multiple branches and bundled circuits that require structured data management.
Physical Layout
Finished length, branch length, breakout positions, connector orientation and reference dimensions affect manufacturing and installation.
3D Routing
Mechanically constrained products may require bundle routes to be developed inside the product geometry.
BOM & Wire Lists
Automated component and wire outputs can reduce manually maintained manufacturing information.
Revision Control
Connectivity, physical layout and component information should remain synchronized as the design changes.
The right tool should be selected according to the engineering outputs the project must control, not simply according to whether the software can draw wires.
For engineers preparing connector references and pin assignments for supplier review, the Connector & Pinout Guide explains how connector part numbers, cavity positions, polarity and wire sequence can be documented.
03 · General ECAD
KiCad for Wire Harness Connectivity and Documentation
Best understood as a schematic-based workflow for simpler harness definition—not a dedicated harness engineering suite.
Engineers searching for kicad wire harness workflows are often already using KiCad for PCB and electronic system development and want to document cable or harness connections inside the same environment.
KiCad is primarily an electronic design automation platform for schematic and PCB development. Its schematic environment supports electrical wires, nets, labels and hierarchical design structures, which means engineers can use it to represent connector-to-connector electrical relationships in simpler harness projects.
Where KiCad Can Be Useful
- Prototype harnesses
- Simple internal equipment wiring
- Point-to-point connector assemblies
- Electronics teams already using KiCad
- Projects where electrical connectivity is the primary requirement
An engineer can define connector symbols, pins and circuit relationships in a schematic, giving the manufacturer useful information about what should connect to what.
Where Additional Documentation Is Still Needed
Electrical connectivity does not automatically define the finished physical harness. Production may still require separate information covering:
- Finished harness dimensions
- Branch lengths and breakout locations
- Connector orientation
- Wire or cable specifications
- Terminal and seal details
- Sleeving, tubing or heat shrink
- Labels
- Testing requirements
KiCad can be used to document simpler harness connectivity, but its schematic environment should not be treated as a complete manufacturing definition for a production wire harness.
Official reference: KiCad Schematic Editor Documentation
04 · Integrated Electronics Harness Design
Altium Designer Harness Design
Dedicated harness functionality inside a broader PCB, electronics and multi-board engineering environment.
The current altium wire harness workflow is different from using a conventional PCB schematic to represent connector wiring.
Altium Designer includes dedicated Harness Design functionality covering pin-to-pin connectivity, harness wiring diagrams, physical harness layout and downstream manufacturing documentation. Harness projects can operate as standalone projects or be associated with multi-board system development.
What the Altium Harness Workflow Can Support
- Pin-to-pin harness wiring definition
- Harness Wiring Diagram documents
- Harness Layout Drawing documents
- Cable, shielding and twisting information
- BOM-related component management
- Manufacturing drawing and output workflows
- Integration with broader multi-board electronics projects
Altium Designer includes dedicated harness design capabilities rather than relying only on conventional schematic capture.
Official reference: Altium Designer Harness Design Documentation
05 · Dedicated Harness Engineering
Arcadia Wire Harness Design
A purpose-built harness engineering environment where wiring and downstream manufacturing data are central to the workflow.
Arcadia wire harness design is positioned differently from general PCB schematic software because harness-specific engineering is the main product workflow.
Arcadia by Cadonix supports the development of physical 2D harness layouts and can manage harness-oriented component information such as terminals, seals, sleeves and other assembly details. Its workflow also supports outputs such as BOMs and wire lists as well as design-rule checking and integration with other engineering data.
Why a Dedicated Harness Platform Is Different
In a dedicated harness environment, concepts such as these are treated as core engineering objects:
- Connector cavities
- Terminals
- Seals
- Splices
- Sleeves and coverings
- Harness branches
- Wire lists
- Manufacturing data
Arcadia differs from general schematic software because harness definition and downstream manufacturing information are central to the workflow rather than an added documentation step.
Official reference: Cadonix Arcadia Harness
06 · 3D Mechanical Harness Development
CATIA V5 for 3D Wire Harness Routing and Flattening
Particularly relevant when harness routing must be developed in the geometry of a vehicle, aircraft or complex mechanical product.
The main engineering value behind a catia v5 wire harness workflow is physical integration with the product geometry.
In a mechanically complex project, electrical connectivity may already be known. The more difficult problem is determining where the harness physically travels, how it reaches different components and how it fits inside the product without interfering with mechanical structures.
Why the 3D Context Matters
Physical harness development may need to account for:
- Vehicle or product geometry
- Bundle paths
- Mechanical packaging
- Equipment locations
- Installation constraints
- Physical routing space
- Harness slack and routing relationships
CATIA V5 Electrical Harness Flattening can extract and flatten a 3D electrical/geometrical harness and support annotated 2D harness drawings and related reports for downstream documentation.
CATIA V5 becomes particularly valuable when harness design is constrained by the geometry of the vehicle, machine or other mechanical assembly.
Official reference: Dassault Systèmes CATIA Electrical Harness Flattening
07 · ECAD-MCAD Integration
SOLIDWORKS Electrical for Wire Harness Design
Useful when schematic information and the physical cable or harness route must be coordinated with an existing mechanical design.
The solidworks wire harness workflow should be understood in the context of SOLIDWORKS Electrical and SOLIDWORKS Electrical 3D rather than ordinary mechanical modeling alone.
This workflow connects electrical schematic information with mechanical product geometry so wires, cables and harnesses can be routed through the actual equipment model.
What the Workflow Can Support
- Electrical schematic information
- 3D mechanical product geometry
- Wire, cable and harness routing
- Defined routing paths
- Physical wire and cable lengths
- Flattened harness drawings
- Form-board style documentation
- Cut lists and associated BOM information
SOLIDWORKS Electrical is especially useful when the harness must be routed and validated inside an existing mechanical assembly.
Official reference: SOLIDWORKS Electrical 3D
08 · Comparison
KiCad vs Altium vs Arcadia vs CATIA V5 vs SOLIDWORKS
These tools should not be treated as a simple software ranking. They enter the wire harness engineering workflow from different directions.
| Tool | Main Role | Connectivity Definition | Physical Harness Definition | 3D Routing | Manufacturing / Documentation | Typical Fit |
|---|---|---|---|---|---|---|
| KiCad | General schematic ECAD | Schematic-based | Usually requires additional/custom documentation | Not its primary workflow | Additional manufacturing documentation normally required | Simple harnesses, prototypes, electronics teams already using KiCad |
| Altium Designer | Electronics ECAD with dedicated harness design | Native harness wiring workflow | Native harness layout | Not primarily mechanical product packaging | BOM and manufacturing-documentation workflow | Electronics, PCB and multi-board systems |
| Arcadia | Dedicated harness engineering | Core workflow | Core 2D harness workflow | MCAD-related integration available | BOM, wire lists and harness-oriented outputs | Harness-focused engineering teams |
| CATIA V5 | 3D harness installation and physical packaging | Used within broader electrical harness workflow | 3D harness plus flattening | Core focus | Flattened 2D drawings and related documentation | Automotive, aerospace and complex mechanical products |
| SOLIDWORKS Electrical 3D | ECAD-MCAD harness development | Schematic-driven | 3D plus flattened harness documentation | Core workflow capability | Flattened drawings, cut lists and BOM-related documentation | Machinery and SOLIDWORKS-based product teams |
A platform should be evaluated according to the electrical, mechanical, documentation and collaboration requirements of the specific project.
09 · Software Selection
Which Wire Harness Design Software Should You Choose?
The answer depends on which engineering problem creates the most complexity in the project.
Simple Connectivity or Prototype
A general schematic environment such as KiCad may be sufficient when connectivity is simple and a separate controlled drawing defines physical manufacturing requirements.
PCB & Multi-Board Electronics
Altium Designer can be attractive when harnesses connect PCBs, electronic modules and multi-board systems already developed inside the Altium environment.
Dedicated Harness Engineering
Arcadia becomes more relevant when wires, branches, connectors, terminals, seals, coverings, variants and manufacturing data need dedicated harness-oriented management.
Complex Vehicle or Aerospace Routing
CATIA V5 is particularly relevant when the physical installation and mechanical product geometry are major harness design constraints.
Machinery Designed in SOLIDWORKS
SOLIDWORKS Electrical can be a logical choice when electrical routing needs to remain closely connected with equipment already developed in the SOLIDWORKS mechanical environment.
Supplier Manufacturing Handoff
Whatever software is selected, the released manufacturing package still needs to communicate exactly what the finished harness must be.
These are workflow examples rather than absolute software rankings. The best platform is the one that controls the required engineering information without creating unnecessary manual data transfer between systems.
10 · Manufacturing Handoff
Wire Harness Design Software Does Not Replace a Manufacturing Definition
This is one of the most important distinctions between designing a wire harness and actually manufacturing one.
A wire harness can be electrically correct in a schematic and still be incomplete for manufacturing if dimensions, connector details, materials, protection and testing requirements are not defined.
Electrical Definition
Manufacturing needs a clear definition of:
- Connector-to-connector relationships
- Pinout
- Wire identification
- Wire sequence
- Splices where applicable
Physical Definition
The supplier may also need:
- Finished length
- Individual branch lengths
- Breakout positions
- Connector orientation
- Critical dimensional references
The Drawing & Wiring Diagram Guide explains how this type of electrical and physical information can be prepared for manufacturing review.
Component Definition
The manufacturing package should identify the required wire or cable, connector housings, terminals, seals, accessories and protective components.
For projects with more complex component structures, the BOM Preparation Guide explains how wires, connectors, terminals, housings, sleeves, labels and other materials can be organized.
Protection and Identification
Depending on the application, production information may also define:
- Heat-shrink tubing
- Braided sleeving
- Corrugated tubing
- Tape or wrapping
- Labels and markers
- Other routing or protection materials
Testing Definition
The manufacturer should also know which acceptance checks are required. The Testing Requirement Guide can be used to prepare continuity, polarity, pinout, visual inspection and other project-specific testing expectations.
The design software is only one part of the handoff; manufacturing requires a controlled definition of what the finished harness must physically and electrically be.
11 · Supplier Package
What Files Should You Send a Wire Harness Manufacturer?
The manufacturer does not necessarily need every native design file used during product development. What matters most is whether the released package clearly defines the product.
| Information | Typical Format or Reference | What It Helps Define |
|---|---|---|
| Harness Drawing | Controlled PDF or released drawing | Dimensions, branch layout, connector positions and construction |
| Electrical Connectivity | Schematic, pinout table or connection table | Wire-to-pin and connector-to-connector relationships |
| Components | BOM | Wire, connector, terminal, seal and protection part definition |
| Connector Definition | Part numbers and reference drawings | Housing, terminal, mating and orientation requirements |
| Physical Routing | 2D layout or 3D reference | Installation context and harness path |
| Wire Requirements | Wire table, drawing or BOM | Gauge, type, color and other controlled attributes |
| Protection | Drawing notes / BOM | Sleeves, tubing, heat shrink and protection locations |
| Testing | Testing requirement | Acceptance checks before shipment |
| Revision | Drawing / BOM revision | Which configuration is approved for production |
12 · CAD Compatibility
Can Manufacturers Work From KiCad, Altium, CATIA or SOLIDWORKS Files?
Sometimes, but native software compatibility should not be the foundation of the supplier handoff.
OEM engineering teams and wire harness manufacturers often use different CAD or ECAD environments. One company may design in KiCad, another in Altium, CATIA, SOLIDWORKS or a specialized harness platform.
A manufacturer does not necessarily need the same native CAD platform as the OEM when the released manufacturing package clearly defines the finished harness.
Controlled neutral outputs are often easier to exchange across companies, including:
- PDF harness drawings
- BOM files
- Pinout tables
- Connection lists
- Reference 3D files where useful
- Component specifications
- Testing requirements
A native CAD file can still be valuable as supporting reference information, but both parties should understand which released documents define the production configuration.
13 · Common Mistakes
Common Wire Harness Design Software Mistakes
Choosing Software Only Because It Can Draw a Wiring Diagram
A wiring diagram may define connectivity, but a production harness can also require physical dimensions, component definition, manufacturing information and revision control.
Confusing Schematic Completeness With Manufacturing Completeness
An electrical schematic may fully define circuit relationships while leaving harness length, branch geometry, protection, terminals, labels and testing undefined.
Ignoring 3D Routing Until the Prototype Stage
For mechanically constrained products, delayed routing review can result in incorrect lengths, difficult installation, interference or poor connector orientation.
Keeping Connector and BOM Data in Uncontrolled Separate Files
If one document identifies a different connector or wire definition from another, the supplier may not know which configuration is authoritative.
Sending Native CAD Files Without a Released Drawing
A native CAD project does not automatically communicate which revision is approved, which dimensions are critical, what testing applies or whether substitutions are permitted.
14 · Selection Checklist
Wire Harness Design Software Selection Checklist
Before selecting a software platform, define which engineering outputs must remain controlled throughout the project.
Official References
Software Documentation Used for This Guide
Software capabilities can change between versions. The following official documentation pages provide current product information for the workflows discussed above.
Conclusion
Choose the Software for the Engineering Problem You Need to Control
There is no universal answer to which wire harness design software engineers should use.
KiCad can support simpler schematic-based connectivity documentation. Altium Designer provides a dedicated harness workflow within a broader electronics and multi-board environment. Arcadia is centered on dedicated harness engineering and manufacturing data. CATIA V5 is particularly valuable for complex 3D harness installation, while SOLIDWORKS Electrical connects electrical development with mechanical equipment and product geometry.
The right wire harness design software depends on the engineering problem that must be controlled. The released manufacturing package then defines the harness that must actually be built.
Regardless of whether the design originates in KiCad, Altium, Arcadia, CATIA V5, SOLIDWORKS or another platform, a manufacturer still needs clear connectivity, dimensions, components, protection, testing and revision information.
If you are preparing an OEM project for supplier review, our Custom OEM Wire Harness page explains the drawings, BOM files, connector details, pinout, branch structure and testing information typically used for quotation and manufacturing review.
Frequently Asked Questions
Wire Harness Design Software FAQ
Practical answers about KiCad, Altium, Arcadia, CATIA V5, SOLIDWORKS and wire harness manufacturing handoff.
What software is used to design wire harnesses?
Engineers use different wire harness design tools depending on the project. General schematic tools such as KiCad can document simpler electrical connectivity, while Altium Designer provides a dedicated harness workflow, Arcadia is purpose-built for harness engineering, and CATIA V5 or SOLIDWORKS Electrical are relevant when physical 3D routing must be integrated with the mechanical product.
Can KiCad be used for wire harness design?
KiCad can be used to represent connector-to-connector electrical connectivity using schematic tools, nets, labels and hierarchical sheets. However, a KiCad schematic should not automatically be treated as a complete manufacturing definition because dimensions, physical layout, protection, component details and production requirements may require separate documentation.
Does Altium support wire harness design?
Yes. Altium Designer includes dedicated Harness Design functionality for defining pin-to-pin connections, harness wiring diagrams, physical harness layout and manufacturing documentation. Harness projects can also be associated with multi-board projects.
What is Arcadia wire harness design software used for?
Arcadia is purpose-built for electrical and wire harness engineering. Its harness workflow can support physical harness layouts, terminals, seals, coverings, component data, BOMs, wire lists, design checks and manufacturing-oriented outputs.
Can CATIA V5 be used for wire harness design?
Yes. CATIA V5 is particularly useful when an electrical harness must be developed in the 3D mechanical context of a vehicle, aircraft or other complex product. Its electrical harness workflows support physical installation and harness flattening for downstream documentation.
Can SOLIDWORKS Electrical be used for wire harness design?
Yes. SOLIDWORKS Electrical can connect schematic information with the mechanical product model for wire, cable and harness routing. SOLIDWORKS Electrical 3D can also support flattened harness documentation and related manufacturing information.
Do I need 3D software to design a wire harness?
Not necessarily. Simple harnesses can often be defined with electrical connectivity, a controlled drawing, BOM, pinout and dimensional information. 3D routing becomes more important when installation space, mechanical interference or physical packaging significantly affects the harness.
What design files does a wire harness manufacturer need?
A manufacturer typically needs a controlled package that defines electrical connectivity, connectors, pinout, wire requirements, finished dimensions, branch dimensions, materials, protection, testing requirements and revision status. Native CAD files can be useful references but should not replace a clear released manufacturing definition.
Have a Wire Harness Design Ready for Manufacturing Review?
Send your drawing, wiring diagram, BOM, connector part numbers, pinout, branch dimensions, sample references and testing requirements. We can review the project information for prototype, quotation and repeat manufacturing preparation.