Marine-Grade Wiring Looms & Control Boxes.
"Absolutely first rate; fast and helpful service! Highly recommended!"
— Mark P. ✅ Verified Buyer, April 2025
- Built tougher to handle real-world abuse.
- IP68-rated waterproof enclosures
- Rugged relays & breakers
- Labelled wiring for plug-and-play installs
- Pre-tested and ship-ready
- Custom specs available — loom lengths, connector types, you name it
Volvo Penta Compatible 3M Wiring Loom Extension - Standard
16-Pin Volvo Penta Compatible Wiring Loom Extension Cable
Extend your Volvo Penta panel connection with confidence. This high-quality marine wiring loom is fully compatible with all Volvo Penta instrument panels, MDI units, and D-series relay boxes. Engineered for a robust, watertight fit, it ensures reliable signal and power delivery between your engine and control panel.
Key Features:
- Brand new, extension loom – built for harsh environments.
- Fully pinned for all functions – works with gauges, warning lights, starter, stop, heater plugs, and alarms.
- Heavy-duty corrugated closed conduit – protects wiring from chafe, heat, and impact.
- Standard 16-way round connector – 1 male plug & 1 female plug, compatible with OEM Volvo Penta fittings.
- Available in custom lengths to suit your installation.
Whether you’re relocating your instrument panel, upgrading your helm layout, or replacing a damaged loom, this extension cable delivers OEM-level reliability with long-lasting protection.
💡 Need advice? Contact our team for personalised recommendations and technical support — we’re here to help you get the perfect fit for your setup.
Volvo Penta Circuit Breaker / Relay Panel - standard
Elevate your marine electrical system with our Aftermarket Engine Wiring Harness and Breaker/Relay Panel – a premium replacement meticulously designed to exceed the standards of the original wiring harness on your engine.
Key Features:
Utilizes the Volvo Penta Round 16-Way Multi-Connector
Single Alternator Wiring (Twin Alternator Wiring Available upon Request)
Supplied with Replacement Oil and Water Sensors
Two Breakers and Three Relays for Enhanced Control
Available in Standard 12V (24V Versions Available on Request)
Your safety and satisfaction is our paramount concern; thus, please don't hesitate to get in touch for any inquiries, product assistance, or personalised recommendations. Our dedicated team is here to ensure your unique needs are met, striving to surpass your expectations in every aspect of your product and customer service experience.
Volvo Penta MDI Unit Replacement.
This Volvo Penta MDI System Replacement uses affordable, and longer lasting electrical components designed to replace the MDI unit for your boat.
By using relays instead of fragile small electrical parts, such as circuit boards, you can extend the life of the MDI unit and increase reliability.
It can connect with your original Volvo Penta panel, loom and sensors from your engine, or any Dragon Marine Systems.
Designed for durability, this product is made with...
- Waterproof GEWISS Electrical Enclosure.
- Surge Protection: Blade fuses & Main Midi fuse box.
- BOSHH (or similar) Relays and Relay Holders.
- Volvo Penta 16-Way Connector Plugs and pins.
- Sealed Heat-shrunk connectors designed for plug and play with your engine.
- Marine Grade Tinned & Wires & Cables.
Designed to fit on a nearby wall in the engine bay instead of directly on top of the engine, as the problem with the OEM system, it causes the MDI unit to get too hot and covered in muck.
The unit is sold separately from our wiring looms, instrument panels and sensors which are sold separately on our store.
You can order a complete kit by selecting the appropriate items during and checking out.
Manufactured in the United Kingdom.
Volvo Penta Compatible 3M Wiring Loom Extension - Premium
16-Pin Volvo Penta Compatible Wiring Loom Extension Cable
Built Using OCEANFLEX Tinned wire for this wiring loom to be uneffected by saltwater corrosion and supply consistant, reliable voltage when needed.
is fully compatible with all Volvo Penta instrument panels, MDI units, and D-series relay boxes. Engineered for a robust, watertight fit, it ensures reliable signal and power delivery between your engine and control panel.
Key Features:
- Brand new, marine-grade extension loom – built for harsh environments.
- Tinned copper cables – superior conductivity and corrosion resistance.
- Fully pinned for all functions – works with gauges, warning lights, starter, stop, heater plugs, and alarms.
- Heavy-duty corrugated closed conduit – protects wiring from chafe, heat, and impact.
- Standard 16-way round connector – 1 male plug & 1 female plug, compatible with OEM Volvo Penta fittings.
- Available in custom lengths to suit your installation.
Whether you’re relocating your instrument panel, upgrading your helm layout, or replacing a damaged loom, this extension cable delivers OEM-level reliability with long-lasting protection.
💡 Need advice? Contact our team for personalised recommendations and technical support — we’re here to help you get the perfect fit for your setup.
