Mercury – NMEA 2000 Power Harness | Fused Backbone Power Lead | 84-8M0114012

Overview

A stable NMEA 2000 network starts with clean, dependable power. The Mercury 84-8M0114012 Power Harness gives you a fused, overmolded connection that plugs directly into the backbone and keeps every device on the network supplied with the voltage it needs. It’s simple, sturdy, and built for the kind of wet, noisy, vibration-prone spaces where most marine wiring lives.

Key Features

• Backbone Power Feed – Provides the dedicated 12V supply an NMEA 2000 network must have.
• Overmolded 5-Pin Connector – Sealed, durable, and made for long-term marine exposure.
• Integrated Fuse Protection – Helps keep the network safe from shorts or voltage spikes.
• Plug-In Installation – Connects to any standard NMEA 2000 port—no special adapters needed.
• Marine-Ready Cable – Flexible sheathing that handles vibration, heat, and moisture without degrading.

Compatibility

• All NMEA 2000-compliant backbones
• Any 5-pin NMEA 2000 device, display, gateway, or sensor
• Works with Mercury and non-Mercury N2K systems

Performance & Practical Benefits

This harness keeps your backbone powered cleanly and consistently. Once plugged in, it gives the network a stable voltage source so sensors, gateways, and screens stay online without flickering or dropping out. It’s especially useful when adding new devices—autopilots, MFDs, engine gateways—because it ensures the backbone has a solid power feed that won’t sag under load.

Why Buy OEM

A network is only as stable as its power connection. Mercury’s OEM harness uses the right wire gauge, proper sealing, and tight-fitting connectors that hold up in real marine environments. Many off-brand power leads loosen, corrode, or feed noisy voltage into the backbone—issues that can cause device resets or full network failures. The OEM harness avoids those headaches.

FAQ

Q1: What does this harness power?
It powers the entire NMEA 2000 backbone, not individual devices.

Q2: Do I need more than one power harness?
No. An NMEA 2000 network should be powered at one point only.

Q3: Does the fuse come installed?
Yes. The harness includes a ready-to-use fused lead.

Q4: Can this be used with non-Mercury equipment?
Yes. It’s fully compatible with any NMEA 2000 network.

Q5: Is installation difficult?
No. Plug it into a backbone port, run the fused lead to power, and the network is ready.