harness.design is a web-based CAD tool for designing wire harnesses, built for home builders, fabricators, race teams, and professional wiring shops.
Instead of tables and menus, you work directly on the canvas, dragging, connecting, and arranging interactively. The result is a clean, readable harness design in a fraction of the time.
Nothing to install. Just open a browser and start designing.
Design Your Wire Harness in the BrowserWire harness design that's fast, visual, and free to tryMar 2026