Mercury – 5-Pin NMEA 2000 / CAN H Extension Harness | 10 m | 84-879171T11

Overview
Some boats have long, winding rigging paths that don’t make cable routing easy. If your GPS antenna or IMU needs to sit way up front—or higher on the boat for clean reception—the Mercury 84-879171T11 Extension Harness gives you the distance to make that happen. With ten full meters to work with, you can run the cable exactly where it needs to go without stretching anything or forcing tight bends.

Key Features

• 10-Meter Length – Plenty of room for long, sweeping routing paths on larger boats.
• Standard 5-Pin Micro-C – Works with any NMEA 2000 or Mercury CAN H device.
• Great for High/Forward Mounts – Helps GPS and IMU units get clear sky view and better stability.
• Flexible Marine Jacket – Designed to move with the boat and snake through tight areas.
• Easy Plug-In Design – No wiring changes—just connect it and route it cleanly.

Compatibility

• NMEA 2000 Micro-C networks
• Mercury CAN H networks
• GPS antennas, IMU sensors, heading units, and other 5-pin modules

Performance & Practical Benefits
This longer harness makes it possible to position your equipment where it performs best while still keeping the wiring neat. You can follow a natural rigging path instead of fighting to make things line up. The connectors stay tight, the signal stays steady, and the whole install feels a lot cleaner once everything is in place.

Why Buy OEM
Mercury’s cable ends are built to stay sealed and locked, even when the boat is pounding through chop. Cheaper extensions may look similar but often don’t fit as tightly, and that’s when random dropouts and moisture problems start. Using the OEM harness saves you the trouble of dealing with flaky network behavior later.

FAQ
Q1: Does the 10m length affect signal quality?
No—this is still within the safe range for NMEA 2000 and CAN H communication.

Q2: Will this fit any NMEA 2000 device?
Yes. If it uses a 5-pin Micro-C connector, it’s compatible.

Q3: Can it handle tight bends and turns?
Yes—the jacket is flexible enough for typical rigging paths.

Q4: Is any setup needed after installation?
No. It functions as a simple extension cable.

Q5: Safe for saltwater environments?
Yes—OEM connectors are marine-sealed and built for long-term exposure.