Marine Wiring Solutions
Sealed. Documented. Built to Last.
Saltwater eats shortcuts. Whether you’re wiring a center console, restoring a flats boat, or upgrading a utility skiff, your electrical system needs to be secure, clean, and protected.
At Custom Circuitry, we design and build fully pre-wired marine power panels that simplify your install, eliminate sketchy splices, and ensure reliable performance even in the harshest environments.
Built by hand using tinned marine-grade wire, sealed connectors, and organized fuse/relay architecture. Every panel is documented, tested, and ready to mount.
Featured Products
6–12 Circuit Sealed Power Panels
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Pre-wired fuse/relay panel with sealed Deutsch or WeatherPack pigtails
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Fully labeled circuits for bilge, nav lights, pumps, horn, etc.
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Built with tinned marine-grade wire and sealed crimps
Bilge Pump + Float Switch Harness Kit
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Plug-and-play wiring for bilge pump with float switch and manual override
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Includes relay, fuse, and labeled sealed leads
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Eliminates bilge wiring mistakes and saves hours
LED Nav/Anchor Light Loom Kit
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Pre-labeled wire looms for nav, anchor, and deck lighting
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Includes tinned marine wire, sealed pigtails, and instructions
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Ready to install in center consoles, airboats, and skiffs
Why Boaters Choose Us:
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Built to withstand water, vibration, and salt
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Labeled and ready to route, no guesswork
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Real hardware, not Amazon-grade wiring
Built with Precision from Aerospace & Marine Practices
Each panel is built to the same standards used in certified aerospace wiring environments:
- IPC/WHMA-A-620 certified
- J-STD-001 certified
- Space Addendum certified (real-world use on launch vehicles and LEO satellites)
You benefit from years of precision harnessing experience applied directly to the reliability of your marine electrical system.
What You Get with Every Panel
- Marine-rated fuse and relay panel, pre-assembled
- All outputs labeled and pre-terminated with sealed pigtails
- Color-coded, tinned wire with proper gauge sizing
- Clear printed legend showing output circuit names and fuse ratings
- Mounting tabs or plate as required (flat panel or backplate style)
- Power-in leads ready for direct battery or switch input
- Ground distribution terminal block (included)
Marine Wiring – Why You Don’t Want a Cheap Panel
A $99 Amazon marine panel might look fine on the shelf, until your bilge pump fails in the middle of a storm, or your lights flicker out while you’re 10 miles offshore.
Most of those panels use aluminum wire, no weather sealing, and cut corners on connection quality. They’re not tested. They’re not built to last. And they definitely weren’t made for salt.
Custom Circuitry marine panels are built with UL1426 tinned copper marine wire, sealed connectors, and aerospace-style craftsmanship. Every circuit is labeled, tested, and ready for real-world use.
Don’t wait until the water’s in the hull to find out what your wiring’s made of.