Aerospace standards. Real-world experience.

Shaun McCrory, founder of Custom Circuitry, brings hands-on experience building mission-critical wiring systems for some of the world’s leading aerospace companies, launch vehicles, and communication satellites. Every harness is built by hand, tested to professional standards, and backed by a background in real-world flight-certified systems integration.

Before launching Custom Circuitry, Shaun:

• Built over 350 low-earth-orbit satellites for Airbus-OneWeb, fabricating, integrating, and testing full avionics, payload, and power systems.

• Constructed critical ground support and launch umbilicals for SpaceX Falcon 9, Falcon Heavy, and Crew Dragon, including RP-1, LOX, environmental control, and cryogenic commodity delivery systems. 

• Built harsh-environment flight harnesses for Blue Origin’s New Glenn Launch Vehicle, Blue Moon Lunar Cargo Lander, and Blue Ring Satellite, including precision manufacturing of sensors, avionics, and test systems under NASA J-STD-001 and IPC/WHMA-A-620 with Space Addendum standards

• Produced hundreds of automotive standalone harnesses, including Gen V, Duramax LLY, LBZ, and LB7 platforms — all fully labeled, tested, and quality-documented for reliable installation and performance.

Today, Custom Circuitry brings that same level of aerospace-grade precision to:

• Homebuilt aircraft wiring

• Hot rod and classic car harnesses

• Marine electrical fabrication and repair

• PEV’s, E-bikes, and E-Motos

Every harness is crafted using high-grade materials, inspected and tested before delivery.

When you work with Custom Circuitry, you’re getting the kind of quality trusted in space — now built for your plane, your vehicle, or your vessel.

Every Custom Circuitry harness is:

• Built using aerospace-grade materials.

• Fully tested for continuity, proper load path, and environmental resistance.

• Tailored to the application — aviation, marine, and automotive wiring systems built with safety and serviceability in mind.

Whether you’re building an experimental aircraft, restoring a hot rod, or upgrading a marine electrical system, you now have direct access to the same craftsmanship trusted for orbital satellites, human-rated spacecraft, and heavy launch vehicles.

At Custom Circuitry, we don’t just build wiring — we build reliability into every circuit.