From an empty sheet to a finished cut list
How Wiring Studio models a harness, what it calculates from that model, and how each view feeds the bill of materials and cut list.
Chapters
Last updated 25 September 2026
What Wiring Studio is
Wiring Studio is a wire harness design application. You lay out the harness and assign pin-to-pin connections, and Wiring Studio builds the bill of materials and cut list from them as you work. It runs in the browser and as a desktop app for macOS, Windows and Linux, with the same account and the same projects.
What it is
It is built for electrical engineers, harness designers and technicians who design cable assemblies, document wiring and produce build paperwork without an enterprise ECAD license. Wiring Studio picks up where schematic capture ends: once you know the connector list, it takes you to a checked BOM and cut list.

A project holds one or more sheets. A sheet holds the parts you place, the cables between them and the wires inside those cables. Wire lengths, the BOM, the cut list and the design rule checks are all calculated from the sheet. You never edit them directly.
The five views
Every project has five views, switched from the floating toolbar at the top of the workspace. Each one shows the same sheet in a different way.
- Design — the physical harness. Place connectors, ring terminals and branch points, route cables between them, and set cable lengths, coverings and labels. See Design View.
- Wiring — the schematic. See every wire from cavity to cavity, trace and name networks, and add splices, diodes and resistors. See Wiring View.
- 3D — the Design layout as a physical harness you can turn and look at from any side, with 3D models of your parts, ready to export as a GLB file. See 3D View.
- BOM — every part on the sheet, counted and priced from your library, with your price multiplier applied. See BOM and cut list.
- Cutlist — every wire to cut, with its calculated length and your cutlist multiplier applied. See BOM and cut list.

You don't fill in the BOM or the cut list. They update as you place parts and assign cavities, so unlike a spreadsheet they always match the drawing.
What it does
- Formboard canvas — place and route components with pan, zoom and snap-to-connection, and reshape cables with waypoints and tangent handles. See Design View.
- Pin-level wiring — assign a wire, contact, seal and color stripes to each cavity, with double crimps and twisted wires. See Pin configuration.
- Named networks — name a network once and every wire in it takes the name, including wires on other sheets connected through mated connectors. See Wiring View.
- Shielded and multicore cables — map each strand to a cavity, terminate the shield, and lay out a cable's cross-section in concentric layers with fillers. See Cable shielding.
- Connector mates — pair a connector with its counterpart on any sheet and jump between the two. See Sheets and workspaces.
- Reusable components — save a selection or a whole sheet and insert it into any project. See Reusable components.
- Revisions — freeze a project as a read-only, numbered snapshot, keep editing, and restore the snapshot later. See Revisions.
- Parts library — 16 categories with manufacturer data, pricing and properties for each category. On paid plans, AI can find or generate part images and write descriptions. See Parts library.
- Design rule checks — 36 checks in nine categories that run over the whole project as you work. Most take you straight to the item they flag. See Design rule checks.
- Excel import — drop in the spreadsheet you already keep and an AI agent builds the project from it. See Excel import.
- MCP server — connect Claude, ChatGPT or another MCP client, and an AI assistant can read and edit your projects on your behalf. See MCP server.
- PDF, Excel and CSV export — a PDF with any combination of design layout, schematic wiring, pin configuration, BOM and cut list, for the sheets you choose. The pin configuration, BOM and cut list also export to Excel and CSV. See Project export.
- Formboard export — write the active sheet at true physical scale, as tiled PDF pages you tape together with trim marks, overlaps and a calibration ruler, or as one 1:1 DXF for CAD. See Formboard printing.
What it does not do
Schematic capture and PCB layout stay in your ECAD tool. Wiring Studio does neither, and it cannot import a netlist from one.
Cable lengths are values you enter on the drawing, not measurements from a 3D route. If you need the routed length from a vehicle model, measure it there and enter it here. The 3D view shows your formboard layout, not a route through a vehicle.
Where to start
If you are new, start with Getting started. It takes you from a new account to a two-connector harness with a BOM. If you already keep the harness in a spreadsheet, Excel import is the faster way in.
Each chapter after that covers one area: the two canvases and the 3D view, then pins, parts and cables, then design rule checks and outputs, then sheets, teams and settings, then the MCP server and API, and finally keyboard shortcuts and pricing.
Related chapters
Where this chapter leads next, and what it assumes you have already read.
Your first harness
A twenty-minute walkthrough from an empty account to a two-connector harness with a BOM and cut list.
Drawing the harness
The formboard canvas: placing components, routing and shaping cables, and setting cable lengths.
BOM and cut list
How the BOM and cut list are calculated from the sheet: quantities, pricing, multipliers and cut lengths.