Mercury 98-8M0173878 Next-Gen ERC 10-Foot Extension Harness

Mercury – Next-Gen ERC Extension Harness Kit (Single) | 10-Foot Extension | 98-8M0173878

Overview
This ten-foot extension gives a single-engine Next-Gen ERC setup the extra distance it needs when the stock harness just won’t reach cleanly. It’s useful on boats where the rigging path runs a little farther than expected or takes a few tight turns. Instead of stretching the wiring or forcing awkward bends, this extension lets everything lay out naturally. It’s a simple way to make the control run feel smoother and easier to route.

Key Features
• Ten-Foot Extension – Adds plenty of slack for longer routing paths.
• Single-Engine ERC Use – Designed for one-engine Next-Gen electronic remote control systems.
• OEM Connectors – Factory-fit ends that lock in securely.
• Relaxed Wiring Path – Helps avoid sharp corners and pulled harnesses.
• Consistent Signal Flow – Keeps throttle and shift input steady.

Engine & Boat Compatibility
• Next-Gen ERC
• Single engine
• Digital rigging layouts

Performance & Practical Benefits
The added length makes routing far less stressful, especially when the harness needs to travel across bulkheads or through a tight rigging bay. Controls usually feel cleaner because the wiring isn’t kinked or under strain. It also makes future service easier since the harness follows a smoother, more open path. For longer runs, this extension brings a noticeable sense of breathing room.

Why Buy OEM
OEM extensions handle vibration, heat, and saltwater better than off-brand wiring. The connectors match Mercury’s spec, so you’re not chasing random glitches or loose fittings. It’s dependable gear meant to last through real-world use.

FAQ
Q1: How do I know I need this extension?
A: If the ERC lead falls short or forces a tight bend on a longer run, this ten-footer usually solves it.

Q2: Any setup or calibration needed?
A: Nope—plug it in and it’s ready.

Q3: How does it handle saltwater?
A: Fine, just rinse occasionally and check the connectors.

Q4: Any install tips?
A: Give it a smooth route with gentle curves so nothing is under tension.

Q5: What are early signs it may be wearing out?
A: Sticky or hesitant control feel, intermittent signals, or jacket rubbing.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.