Specializing in Complex Cable Assemblies

Sectors We Serve

Wire Harness and Custom Cable Assembly manufacturing services for Defense Contractors and Industrial OEMs.

Cable assembly, wire harness, box build and system integration manufacturing services for power, communication, electrical and electronic applications.

Manufacturing you can rely on


units produced per quarter.


ISO quality rating for all shipped units.


or higher on-time delivery rate per month.

our services

MRO manufactures and supplies custom cable assemblies, complex wire harnesses, overmolded cables, box builds, custom antennas, custom backshells and industrial electronic components.

Cable Assemblies

Whether you need a simple coax cable assembly or a rugged overmolded mil-spec cable assembly, MRO has the capability to manufacture your design reliably and within your budget.

  • Coax cable assemblies
  • Technical cable assemblies
  • Mil-spec cable assemblies
cable assembly services

Wiring Harnesses

From simple to highly complex, we have the experience you need when it comes to wiring harnesses. We provide manufacturing for defense contractors across air, land and sea platforms, and currently work with several prime contractors.

  • Mil-spec wire harnesses
  • High complexity design manufacturing
  • Air, Land and Sea platform solution provider
wiring harnesses services

Box Builds

Box builds including PCB installation, sub assemblies, and full cabinets with up to 1000 connections. We work with both client provided enclosures and provide a range of enclosure product lines, depending on your needs.

  • Full box builds with up to 1000 connections each
  • Rack and panel wiring
  • Control panels and system integrations
box build services

What our clients have to say

MRO has consistently met our strict specifications, challenging requirements and aggressive lead times. Our Military Spec Cable Assemblies require superior manufacturing techniques, not common in conventional cable assembly manufacturing. MRO has the required experience and capabilities for our Military Specifications and complex designs.

Effective communication is MRO’s strongest point. Particularly, openness to listen.

Recently, we introduced MRO to some of our end customers. The key takeaway was that they were impressed with MRO’s understanding and execution of the customers’ complex designs.

MRO has become an integral part of our success by effectively delivering tight schedule requirements, from large orders to small design verification’s. On time and with a high level of quality.

General Dynamics Mission Systems–Canada

Clients we are proud to work with

general logo
defence logo

About MRO

We are a full-service wire harness manufacturer for defense contractors, industrial OEMs and other companies looking for high-quality custom cable assemblies, wiring harnesses and box builds. Our specialty is in highly complex, mission-critical applications and harsh environments. We also offer value-added services including inventory management, design consultation, and prototyping.

about mroour management team

Parts & Accessories

We are a distributor of industrial electronic components focusing on Mil-Spec Connectors, RF Connectors and Adapters, Rugged Multicore Wire and Cable, Coaxial Cable, Wire Management Products, Heat Shrink, Antennas, Enclosures,  Test equipment and Tools.

Parts & Accessories


Read the latest news from our manufacturing blog, or take a look at one of our manufacturing case studies.


What to consider when choosing a Coaxial Cable

Our founder has been quoted as saying “MRO services the wired part of wireless.”  Electrical and electronic cables exist to allow electrical energy, signals or data to be moved to

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Antenna types for a wide variety of applications

One of mankind’s greatest assets is our large vocabulary making us able to take a thought from one brain and give it to another. We have extended this capability by

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Comparable electronic components provide a wider range of options

Exploring Equivalent Electronic Components

Exploring Equivalent Electronic Components When it comes to electronic projects, trusted brands are often the go-to choice for reliability and performance.  However, solely relying on trusted brands may not always

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Heat Shrink A Versatile Solution for Various Applications

Unlocking the Power of Heat Shrink In the world of engineering, electronics, wire harnesses and custom cable assemblies, heat shrink is a versatile solution for various applications.  This unassuming tubing

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Case Studies

Full chime night 1

Detecting gravity waves – the CHIME telescope project

The CHIME radio telescope was under construction at the Dominion Radio Astrophysical Observatory in British Columbia, Canada, and required specialized cable assemblies with consistent velocity capabilities. CHIME is a UBC

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Oil and Gas Offshore Platform

Developing a rugged cable assembly for seismic data

A client had two challenges for us to solve. The first was a torque problem due to the wear and tear from movement during use of the cable assembly. The

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