Connector Library Data Partner
Powered by industry-leading connector specialists
Our comprehensive connector library is powered by Corsa Technic LLC, the leading provider of hard-to-source automotive connectors for the automotive and motorsport industry. Their extensive catalog of components and detailed specifications ensure you have access to the most accurate and complete connector data available.
Built for Speed and Accuracy
A clean, intuitive interface designed for automotive professionals
Design harnesses with a keyboard-first interface featuring real-time connection validation
Automatically generated cut lists with intelligent length calculations
Export professional pinout sheets ready for production
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Learn from tutorials, connect with other harness builders, and help shape the future of EZ Wire
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Follow UsSpreadsheets Weren't Built for This
You know the pain of managing wiring harnesses in Excel. It's time for a better solution.
Manual Data Entry Errors
Duplicate pin assignments, typos in connections, and invalid wire routing that only shows up during production.
Repetitive Calculations
Manually calculating wire lengths and updating cut lists every time a design changes.
No Validation
Spreadsheets can't tell you when you've made a mistake. Errors hide until it's too late.
Inconsistent Documentation
Creating professional pinout sheets and cut lists means hours of formatting and manual updates.
Built Specifically for Automotive Professionals
Purpose-built software that eliminates errors, automates tedious work, and delivers professional results.
Real-Time Validation
Every connection is validated as you work. Catch errors before they become problems.
Automatic Calculations
Cut lists calculated automatically from branch lengths and customisable additional length settings. No more manual work.
Professional Exports
Generate production-ready pinout sheets and cut lists with one click.
Core Features That Save Time
The essential tools you need to design professional wiring harnesses
Connection Validation
Each connection is validated in real-time. No more duplicate pins, invalid connections, or spreadsheet errors.
Connector Design Library
Create reusable connector designs once and use them across all your harnesses. Save time and ensure consistency.
Auto-Generate Cut Lists & Pinouts
Export professional pinout sheets and cut lists instantly. No manual spreadsheet work required.
Lightning-Fast Design
Keyboard-first interface built for speed. Design harnesses at speed.
Automatic Wire Length Calculations
Intelligent length calculations with adjustable percentages and fixed additions. No calculator needed.
Wire Idents System
Color-coded wire idents with MIL-STD-681F color coding system. Mark wires with up to 5 color bands in 3 locations.
Advanced Branch Management
Define branches with precise lengths. Automatic calculations for straight lay or concentric twisting.
Simple, Transparent Pricing
Choose the plan that fits your needs. Launch pricing available for early adopters.
DIY
Features to be confirmed
Shop
Regular: $129/mo or $1,290/yr
14-day money back guarantee if exports unused
Pro
Advanced features for professionals
14-Day Money Back Guarantee
Try EZ Wire risk-free for 14 days. Get a full refund if you haven't exported any wiring harness data.
*Guarantee is forfeited once harness data is printed or exported
Plus Everything Else You Need
Complete parts libraries, cloud storage, and regular updates
Wire Specifications
Complete wire gauge library with support for AWG, metric and SAE standards.
Secure Cloud Storage
Your designs are automatically backed up and secure in the cloud.
Regular Updates
New features and improvements released regularly based on user feedback.
What's New
Latest updates and improvements to EZ Wire
Fix connector design editing bug when uploading images - forms now properly submit with file attachments
Fix connector ordering in "View All Tabs" mode to display connectors grouped by tab order first, then by connector sort order within each tab
Connector Design Library for creating and managing reusable connector designs across all harnesses - design once, use everywhere. Powered by Corsa Technic!
Coming Soon - In Active Development
These highly requested features are currently in development and will be included in your subscription at no extra cost.
Visual Schematic Designer
ETA DECEMBER 2025⚠️ NOT CURRENTLY AVAILABLE - This is our most requested feature
Draw your harnesses visually with an intuitive drag-and-drop interface. Create schematic layouts that sync with your data-driven designs. Perfect for presentations and visual documentation.
Right now: EZ Wire focuses on rapid keyboard-first data entry for maximum design speed. Visual layouts will be added as an optional enhancement.
Device Pinout Library
ETA Q1 2026⚠️ NOT CURRENTLY AVAILABLE
Pre-populated pinouts for popular ECUs, sensors, and devices. Import and manage device specifications with ease. Quickly reference common automotive components.
Right now: You can create and save your own device pinouts. The pre-populated library will be added in a future update.
Good news: These features will be included in your subscription at no additional cost when released.
Ready to Design Better Harnesses?
Join automotive professionals who have already eliminated spreadsheet errors and automated their harness design workflow.