Mercury – Next-Gen ERC Extension Harness Kit (Quad) | 10-Foot Extension | 98-8M0173881

Overview
This ten-foot extension gives a quad-engine Next-Gen ERC setup the extra reach it often needs on bigger boats. Long rigging runs and tight corners can make the stock harness feel stretched, and this piece helps you avoid that. It lets the wiring fall into a smoother, more natural path so the controls feel steady instead of strained. It’s a simple add-on that makes a crowded quad-engine layout easier to deal with.

Key Features
• Ten-Foot Extension – Adds room for longer or tricky routing paths.
• Quad-Engine ERC Use – Made for four-engine Next-Gen ERC systems.
• OEM Connectors – Factory ends that snap in clean and tight.
• Cleaner Routing – Helps avoid sharp bends and pulled wiring.
• Steady Control Path – Keeps throttle and shift signals consistent.

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

Performance & Practical Benefits
With extra length to work with, the harness can take an easier route through the boat instead of being forced around tight corners. The controls usually feel smoother because nothing is kinked or under tension. It also helps keep the rigging bay from getting cramped, which makes service work later a lot less frustrating. On quad-engine rigs, that extra bit of breathing room makes a noticeable difference.

Why Buy OEM
OEM wiring holds up better to vibration, heat, and salt spray, and the connectors fit exactly the way Mercury designed. That means fewer odd glitches and far less chasing down mystery signal issues. It’s reliable, long-lasting rigging you don’t have to think about again.

FAQ
Q1: How do I know I need this extension?
A: If your quad-engine ERC lead barely reaches or forces a tight bend, this ten-foot extension usually fixes it.

Q2: Any setup needed after installation?
A: No—just plug it in and you’re good to go.

Q3: How does it handle saltwater?
A: Fine—rinse now and then and check the connectors.

Q4: Any installation tips?
A: Give the harness a relaxed route with gentle curves so nothing is pulled tight.

Q5: What are early signs the harness may be wearing out?
A: Hesitant controls, random signal dropouts, or spots where the jacket is rubbing thin.