Replace Excel sheets and hand-drawn sketches with a structured editor, real component data, and clean exports your fabricator can actually read. Plan a harness in minutes, not afternoons.
Generic drawing apps don't understand harnesses. They let you draw anything — including things that won't actually wire up. SmartHarness starts from the way real vehicle wiring works.
Components have pins. Wires carry gauge, color, and labels. The editor enforces consistency so a wire ending nowhere or a connector with the wrong terminal count gets flagged on the spot.
One click gives you a printable PDF for the bench, a CSV wire list ready to paste into a terminal sheet, and a BOM for the parts order. Built for the way harnesses really get built.
Generate a read-only link for a customer or a teammate. They view in the browser — no login, no install, no editing. Revoke the link the moment the job is done.
Drag connectors, switches, fuses, relays, and loads from the palette onto the canvas. Snap them where they belong.
Click pin to pin. Set wire color, gauge, and a label. The editor keeps the routing tidy and the connections valid.
Generate a PDF, a wire list, a BOM, or a share link. Hand it to your fab tech, your customer, or your supplier.
One source of truth, several formats. Whatever the next step of your build needs, SmartHarness can hand it over without copy-pasting from three different files.
Up to two projects, the full editor, and the built-in component library — no trial timer, no card on file. Upgrade to Builder when you're ready for unlimited projects, custom components, and clean exports.
Builder
$25/ month
or $250 / year — save $50
Build it once. Document it properly. Hand it to whoever needs it next.