Draw the harness.
The paperwork writes itself.
Wire harness design for the browser and desktop. Lay it out once and the wiring diagram, pin tables, bill of materials and cut list all come from the same project. Move a cable and every table follows.
3 projects free · no card · read the docs
Used in 60+ countries · 7,000+ pins configured · 4,000+ wires connected
One project, four views
Every sheet has a Design layout and a Wiring schematic. The BOM and cut list are built from them, so nothing is typed twice and nothing drifts out of step.
Design
The physical harness. Parts, branch points, curved cables with real lengths, coverings and labels.
Wiring
The schematic. Pin to pin, cavity to cavity, grouped into named networks.
BOM
Every part counted and priced from your own library, with a markup you set.
Cutlist
Every wire to cut, in metric or imperial, with your own length margin added.
Lay out the harness as it will actually be built
Place connectors, ring terminals and branch points, then pull cables between them as curved ribbons you can shape by hand. Length belongs to the run, not a note on a drawing, so the cut list can't disagree with the layout.
Connect pins, or let Auto Route do it
Wires run cavity to cavity with color codes, groups and network names. Auto Route works out the layout for you, and the app stays responsive while it does.
Every cavity, on one table
Contact, seal or plug, wire, function, network, color stripes, twisted pair, shield, double crimp and splice: every cavity's details on one table, with the connector's cavity diagram beside it so you're always filling in the right row.
Enter a part once, use it everywhere
Start from a standard library and build on it: connectors, contacts, wires, seals, terminals and coverings across sixteen categories, each with manufacturer, part number and price. Keep it to yourself or share it with your team.
Priced in your units
Per foot or per meter, with a project-level multiplier for markup.
Photograph from your phone
Scan the QR code in the part dialog and upload straight from the bench.
Reusable components
Save a selection or a whole sheet as a component, then insert it into any project.
Parts that look drawn, not photographed
Photograph the connector on your bench, paste a catalog link, or let Wiring Studio find a photo by manufacturer and part number. AI straightens whichever you choose into a clean view on a white background, ready to place on the sheet.
Uploading your own images works on every plan.
Read about part images →
An Excel wire list
Upload the spreadsheet you already keep. AI reads it and builds the project step by step, on every plan, Free included.
One PDF, everything in it
A4 landscape with a drawn title block. Choose the sheets, the views and the columns of each table.
An assistant that can check its own work
Connect Claude, ChatGPT or another MCP client and it works in your projects as you — 63 tools across parts, wiring, pins, cables, reports and layout. The useful part is not that it can edit. It is that it can look at what it edited.
- connect_wireGND · X1:4 → X2:12ok
- set_pinX2:12 · 0.75 mm²ok
- run_drcwhole project2 errors
- set_pinX1:4 · 0.75 mm²ok
- run_drcwhole project0 errors
- screenshot_sheetMain harness · 1600 pxpng
“Import the connector catalog we buy from, with cavity counts, contacts and gauge ranges.”
search_parts · upsert_part · list_manufacturers
“Find every project using this connector and repoint them at the replacement.”
list_projects · get_sheet · update_component · run_drc
“Read our wire list the way we write it and build the sheets from it.”
create_project · add_component · connect_wire · fill_pins
“Re-price the library from this distributor list and show me what the BOM comes to now.”
get_part · upsert_part · get_bom
“Trace the red wire out of X1 and tell me every cavity it lands on.”
list_wires · get_part · get_pin_config
“What else is on the CAN-H network, and does any of it leave this sheet?”
get_project · get_sheet · list_wires
Browser or desktop,
same project
The desktop app is the same application in a native shell. Sign in once and your workspace is there either way.
Where the work happens
Drawing, routing, checking and PDF export all happen on your own computer. We store your project and keep it in sync between your devices.
Processed on your machine
Editing, auto-routing, design rule checks and PDF export never leave your computer. The AI features are the only exception, and only when you ask for one.
Never used to train AI
An AI feature sends only what it needs, such as the workbook you upload or the part number you enter. We don't use your content to train any model.
Shared workspaces
Add colleagues to an organization and move projects into it, or back out again. Access is checked every time, not just when you sign in.
Pricing
No card to start. Every plan includes Excel import, the full PDF export, and the BOM and cut list. Go over a plan limit and your work turns read-only — it's never deleted.
Organization workspaces require Team. Prices exclude tax; VAT is calculated at checkout.
Read about pricing and plans →Questions
Read the docs →What can I get out of it?
A multi-page PDF containing any combination of Design, Wiring, Pin Configuration, BOM and Cutlist, across the sheets you pick.
Will it catch my mistakes?
It checks the whole project as you work — unused cavities, contacts crimped outside their gauge range, cables with no length, wires with no route, parts with no price.
Can my team work on the same project?
Yes, through an organization workspace — projects and the parts library are shared with every member, and changes reach everyone. Organization workspaces need the Team plan.
Metric or imperial?
Both. Every length is kept in metric and imperial at the same time, and each project picks which one it shows.
Can an AI assistant work on my projects?
Yes. Connect Claude, ChatGPT or another MCP client to our MCP server and it works in your projects as you, with 63 tools for parts, wiring, pins, cables, reports and layout. It can also run the design rule checks and render a picture of the sheet, so it can see whether what it changed is right.
Start with one harness.
See the tables build themselves.
3 projects free · no card