PROUDLY MADE IN THE USA

Custom CNC Retrofit Wiring Solutions – Fast, Flexible, Built to Spec

Professional CNC retrofit wiring harnesses built to your exact specifications.

Stop wrestling with wiring diagrams and connector mismatches. From Mach3 to LinuxCNC, we deliver precision-built harnesses with exact pinouts, proper shielding, and clear labeling.

No minimum orders. USA-made quality. Whether you need a single prototype harness or production runs for your CNC builds, we're your complete wiring solution.

Starting at 5 Days
No Minimum Order

Why MiniProto

Professional Harnesses Without the Wait

Built to Your Spec

Stop cutting & crimping dozens of wires. Get assemblies built exactly to your specification.

Noise-Free Operation

Eliminate noise issues with shielded, properly grounded cables.

Clear Documentation

Clear labels and diagrams. No guesswork on pinouts.

Starting at 5 Days

Delivered fast. Starting at 5 days turnaround.

Complete Customization

Your Machine, Your Specs

Every CNC retrofit is different. That's why MiniProto doesn't sell pre-boxed kits. We build exactly what you need.

Any Connector, Any Length

Any length: From 0.5m test leads to 10m gantry runs
Any connector: DB25, DB9, Molex, GX16, M12, screw terminals
Any function: Motor power, step/dir signals, spindle VFD, limits & E-stop
Optional add-ons: Ferrules, breakouts, labeling, bundled looms

Compatible With All Controllers

Mach3/Mach4: Parallel port and USB motion controllers
WinCNC: Full breakout board compatibility
LinuxCNC: Mesa cards and parallel port setups
SmoothStepper: Ethernet and USB versions
GRBL/Arduino: Shield and breakout configurations

Quality & Speed

Fast Turnaround. Zero Guesswork.

Quick-Turn Builds

Most custom harnesses ship starting at 5 days. No long lead times.

Continuity-Tested

Every harness tested before it leaves our shop. Guaranteed to work.

Engineer Support

Need a tweak or unique pinout? We'll spec it with you.

Why Choose MiniProto

Why Builders Choose MiniProto

USA

Built in New York

Starting at 5 days

1+

Low MOQ

Order one-off or small batch

Full Customization

No fixed kits or compromises

Instant Quoting

Transparent pricing online

Ready to Retrofit?

Professional-grade CNC retrofit harnesses with no minimum order. Configure your custom solution in minutes.

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