Mercury – 5-Pin NMEA 2000 / CAN H Extension Harness | 8 m | 84-879171T09

Overview
With some boats, the ideal spot for a GPS or IMU sensor isn’t anywhere near the backbone connection. The Mercury 84-879171T09 Extension Harness gives you eight meters of reach, which is often just what you need on a center console or any hull with long rigging runs. It lets you place the sensor where it actually performs best—without stretching the cable or forcing it through tight corners.

Key Features

• 8-Meter Cable Length – A generous run for bigger boats and longer routing paths.
• 5-Pin Micro-C Connectors – Works with both NMEA 2000 and Mercury CAN H networks.
• Ideal for GPS/IMU Relocation – Helps position sensors where they get a clear view and steady readings.
• Flexible Marine Jacket – Easy to route through rigging tubes and behind dash panels.
• Drop-In Installation – Standard male-to-female connection with no wiring changes needed.

Compatibility

• NMEA 2000 networks (standard Micro-C)
• Mercury CAN H bus
• GPS antennas, IMU units, heading sensors

Performance & Practical Benefits
Eight meters gives you enough cable to run along bulkheads, through rigging chases, or up to a higher mounting point for better sky exposure. The harness keeps the install tidy, reduces stress on connectors, and helps ensure the sensor delivers stable data. Once plugged in, the network sees it as a simple extension—no setup, no quirks.

Why Buy OEM
A clean network connection comes down to fit and sealing. Mercury’s connectors lock in firmly and resist moisture, vibration, and corrosion. Off-brand extensions may look similar but often loosen or take on water, which creates frustrating dropouts that are tough to track down. OEM is simply the safer bet for long-term reliability.

FAQ
Q1: Will an 8-meter extension affect signal quality?
No—this length stays within safe limits for NMEA 2000 and CAN H lines.

Q2: Can I use it with any Micro-C device?
Yes. Anything that uses the standard 5-pin connector will work.

Q3: Is the cable flexible enough for tight bends?
Yes—designed for typical marine rigging paths.

Q4: Does it require special tools?
No. Just plug it into the existing network.

Q5: Will it work on SmartCraft boats?
Yes—on the CAN H side of the network where Micro-C connectors apply.