CDI Electronics Mercury Mariner Boat Side Engine Wiring Harness 474-9560

The CDI Electronics 474-9560 is a boat-side engine wiring harness built for Mercury Mariner outboard motors. This harness forms the boat-side half of the engine's electrical wiring system, carrying the wiring connections between the boat's control and instrument wiring and the engine itself. It is designed as a direct fit for the Mercury outboard electrical system, giving boat owners and marine electricians a way to restore or replace worn, cracked, or corroded engine wiring without having to source individual wire runs and connectors separately.

Marine wiring harnesses like the 474-9560 are subjected to constant vibration, heat cycling, and exposure to moisture and salt spray, all of which degrade wiring insulation and connector contacts over time. Replacing the full boat-side harness as a single unit restores reliable continuity across the engine's electrical circuits rather than patching individual damaged sections. This part is identified by CDI Electronics part number 474-9560 and is categorized under the Mercury Outboard Electrical System.

Specifications

• Brand: CDI Electronics
• Manufacturer Part Number: 474-9560
• Application: Mercury Mariner Outboard Boat Side Engine Harness
• Harness Side: Boat Side
• Weight: 4.2 pounds
• UPC: 736983854858

Fitment

Mercury Mariner outboard engines using the boat-side engine wiring harness configuration.

Frequently Asked Questions

What is the CDI Electronics 474-9560 used for? It is a boat-side engine wiring harness for Mercury Mariner outboard motors, carrying the electrical wiring connections between the boat's wiring and the outboard engine.

Is this the engine side or boat side harness? CDI Electronics part number 474-9560 is the boat side engine harness, not the engine side harness, so confirm which side your outboard needs before ordering.

How much does the 474-9560 wiring harness weigh? The CDI Electronics 474-9560 boat side engine harness weighs 4.2 pounds.

What outboard brand is this harness designed for? This harness is built for Mercury Mariner outboard engines as part of the Mercury outboard electrical system.

What is the UPC for the CDI Electronics 474-9560? The UPC for the CDI Electronics 474-9560 boat side engine harness is 736983854858.

Is the 474-9560 a genuine CDI Electronics part? Yes, 474-9560 is the CDI Electronics manufacturer part number for this Mercury Mariner boat side engine harness.

Why would I need to replace a boat side engine harness? Marine wiring harnesses like the 474-9560 are exposed to vibration, heat, and saltwater moisture, which over time can degrade insulation and connectors, making full-harness replacement more reliable than patching individual wires.

Does the 474-9560 include connectors? The CDI Electronics 474-9560 is supplied as a complete boat side engine wiring harness assembly for Mercury Mariner outboards.

Can this harness be used on any outboard brand? No, the 474-9560 boat side engine harness is designed specifically for Mercury Mariner outboard motors.

Is professional installation required for the 474-9560 harness? Because it involves connecting boat-side wiring to the outboard engine's electrical system, installing the CDI Electronics 474-9560 harness is best handled by someone familiar with marine outboard wiring.