Mercury – SC100 Data Harness | 30-Foot SmartCraft Link Extension | 84-880756T30

Overview

Some boats have big helms, long consoles, or layout obstacles that make the standard SC100 data link fall well short. The Mercury 84-880756T30 SC100 Data Harness adds a full thirty feet of reach, giving you the slack you need to run the SmartCraft connection cleanly from one gauge to another—even on wide dashes or larger offshore rigs. It keeps the wiring relaxed and makes long runs feel a lot less cramped.

Key Features

• 30-Foot Extension – Offers generous length for wide helms and long routing paths.
• SmartCraft Data Link – Extends the communication line used between SC100 Series gauges.
• Flexible Routing – Helps you avoid sharp bends and stretched cables behind the console.
• OEM Connector Ends – Factory SmartCraft plugs snap in securely and hold tight.
• Steady Data Flow – Maintains stable SmartCraft communication across the full extension.
• Ideal for Larger Boats – Perfect for long console runs or multi-gauge layouts with big spacing needs.

Compatibility

• SC100 Series gauges
• SmartCraft data link ports
• SC100 multi-gauge setups on larger helm arrangements

Performance & Practical Benefits

This long extension gives you the freedom to run the SmartCraft link through bigger boats without straining the harness. It’s helpful when gauges are spaced far apart or when the wiring has to weave through long or awkward rigging channels. Once installed, the gauges continue sharing data normally, and the behind-dash layout becomes much easier to organize and service later on.

Why Buy OEM

SmartCraft networks depend on clean communication and tight-fitting connectors. Mercury’s OEM harness keeps the pin alignment true and the shielding intact, so you don’t run into the glitches or loose-fit issues that cheaper cables can cause over long distances. It’s built to hold up in real marine conditions, from vibration to heat to daily use.

FAQ

Q1: When is a 30-foot extension helpful?
When your SC100 gauges sit far apart or the wiring needs to cross a long helm or console area.

Q2: Will the gauges read normally with this added length?
Yes. It only extends the SmartCraft data link and doesn’t affect how the gauges interpret information.

Q3: Is this harness only for SC100 gauges?
Yes. It’s designed specifically for SC100 Series linking.

Q4: Is the installation complicated?
No. It plugs into the existing connectors just like the factory harness.

Q5: Is it suited for harsh marine environments?
Yes. The OEM jacket and connectors hold up well in long-term marine use.