Reliability built into every circuit
Aircraft, marine, automotive, e-bikes and more
Premium components and aerospace-grade craftsmanship
Custom Circuitry is a precision wiring harness fabrication and repair company focused on homebuilt aircraft, custom automobiles, marine vessels and personal electric vehicles.
Wiring built by IPC certified technicians, to the exacting standards used on SpaceX rockets and Airbus satellites — now available for you.
Services
Custom Circuitry builds aerospace-grade wiring harnesses for experimental and homebuilt aircraft.
✈️ EFIS Panel Harness
🔌 12V Master Bus Kit
💡 Wingtip Lighting Harness Kit
Everything is built by an IPC/WHMA-A-620 certified technician to the same Class-3 Space Addendum standards used in launch systems and orbital vehicles.
✔Precision-built for airframe routing
✔No guesswork: every termination is labeled
✔Designed for real-world vibration, heat, and inspection readiness
Whether you’re wiring a hot rod, airboat, or custom off-road vehicle, your harness should be built like aerospace — not an afterthought.
🔥 12-Circuit Universal Harness
🛠️ Mini Accessory Power Panel
🚘 Universal Lighting/Power Harness
Custom Circuitry builds labeled, tested, Class 3–compliant harnesses that simplify your build and outperform every kit on the market. Built using automotive GPT/TXL wire and OEM-grade tooling.
✔Cleaner than any box-store “universal kit”
✔Built to spec, not cobbled together
✔Labeling + documentation = fast, safe install
Marine wiring must be saltproof, sealed, and 100% reliable. Don’t trust your lights and bilge pump to an overseas supplier.
🚤 6–12 Circuit Sealed Power Panel
⚓ Bilge Pump + Float Switch Harness
🧭 LED Nav/Anchor Light Loom Kit
Custom Circuitry’s marine panels and harnesses are built with UL1426 tinned copper wire, Deutsch or WeatherPack connectors, and IPC/WHMA-A-620 Class 3 workmanship.
✔Built to withstand water, vibration, and salt
✔Labeled and ready to route — no guesswork
✔Real hardware, not Amazon-grade wiring
EV wiring must handle torque, vibration, and heat — without failure. Don’t risk your build to spliced cables and questionable diagrams.
⚡ Fardriver Controller PNP Harness
🔋 Onyx RCR Full Rewire
📈 Phase Cable Extension Kit
Custom Circuitry’s EV and emoto harnesses are built with Tefzel or GXL wire, sealed connectors, and IPC/WHMA-A-620 workmanship proven in aerospace.
✔ Built to handle high current and harsh conditions
✔ Plug-and-play for Onyx, Sur-Ron, Talaria, and more
✔ No guesswork, no soldering — just ride
Why Choose Custom Circuitry?
✔Built by IPC-Certified Technicians
✔Every harness inspected and tested before delivery
✔Support available for easy installation
✔Aviation-grade materials, even for your car or boat
✔Fast turnaround and responsive customer service
Our certified technicians deliver critical wiring built to the highest quality IPC/WHMA-A-620 standards — engineered to perform, wherever you go. Sky, Sea, or Track
