Splice – CAD for Cable Harnesses and Electrical Assemblies
I first posted Splice CAD as an in-browser tool for making cable harnesses. Since then it’s grown in both features and scope — the direction is moving from “harness-only” toward a lightweight CAD for wiring and electrical assemblies. New functionality includes: Editing Enhancements - Full undo/redo to easily restore editor state - Multi-select & group actions to move, delete, and add components - Bulk connect tool to create straight-through, crossover, or custom wiring patterns quickly - Multiple connections per pin allow for daisy chains, etc. Documentation Additions - Multi-page PDF…
Splice – CAD for Cable Harnesses and Electrical Assemblies launched on August 21, 2025 with 89 votes, #414 of 8,530 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Splice is an in-browser CAD tool for designing cable harnesses and electrical assemblies. It lets users create wiring diagrams with features including undo/redo, multi-select editing, bulk connection tools for patterns, and multi-pin connections for daisy chains. The tool can export designs as multi-page engineering PDFs and WireViz YAML files. It's built for engineers and technicians who need a lightweight alternative to traditional CAD software for electrical and wiring projects.
written from the facts on this page · September 2026
From the sources
Design cable assemblies and wire harnesses with our browser-based CAD tool. Generate BOMs, create manufacturing documentation, and export to industry formats.
Design and document cable assemblies and wiring harnesses. Map system-level connectivity. Generate projects and assemblies, convert from PDFs, images, spreadsheets, or any structured input — flexible ingress and egress for your wiring harness and cable assembly data. Embed Splice's interactive harness viewer in your web applications. Python library for programmatic harness creation and automation. Complete wiring harness for a CNC router powered by Brookwood Design's Teensy 4.1 grblHAL board. Includes stepper motor controller and motor connections and spindle control. Industrial power distribution schematic stepping down AC line voltage to dual protected DC branch circuits. Features circuit…from splice-cad.com
In the maker’s words, at launch
I first posted Splice CAD as an in-browser tool for making cable harnesses. Since then it’s grown in both features and scope — the direction is moving from “harness-only” toward a lightweight CAD for wiring and electrical assemblies. New functionality includes: Editing Enhancements - Full undo/redo to easily…
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