Mercury – Diesel Engine Switched Power Harness | 3 Ft | Power Harness | 8M0150521

The Mercury diesel engine switched power harness is designed for diesel installations where a clean, compact power connection is required. This harness supplies engine-switched power, ensuring connected components receive voltage only when the engine is running. It helps protect onboard electronics from unnecessary power draw when the engine is off.

The 3-foot length is ideal for tight engine compartments and installations where components are mounted close to the engine. Shorter routing reduces excess slack, minimizes strain on connectors, and supports long-term electrical reliability in demanding diesel environments.

Key Features

• Engine-Switched Power Feed – Supplies power only when the engine is running
• 3-Foot Harness Length – Ideal for compact engine rooms and short routing paths
• Diesel-Specific Design – Built for Mercury diesel electrical systems
• OEM Wiring & Connectors – Manufactured to factory durability and sealing standards

Engine & Boat Compatibility

• Mercury diesel engines
• Boats with compact diesel engine compartments
• Mechanical control systems
• DTS control systems

Important Notes

• Designed specifically for Mercury diesel applications
• Not intended for gasoline outboard systems
• Confirm required harness length before installation
• Professional installation recommended for diesel electrical systems

FAQs

1) What does an engine-switched power harness do?
It provides power only when the engine is running, ensuring connected accessories are not energized when the engine is off.

2) When should I use a 3-foot harness?
A 3-foot harness is ideal when electrical components are mounted close to the engine and minimal routing distance is required.

3) Is this harness compatible with DTS systems?
Yes. This harness is compatible with Mercury diesel installations using mechanical or DTS control systems.

4) Can this be used on gasoline engines?
No. This harness is designed specifically for Mercury diesel electrical systems.

5) Why choose an OEM Mercury power harness?
OEM harnesses use the correct wire gauge, insulation, and sealed connectors to help prevent corrosion, voltage drop, and intermittent electrical issues in diesel environments.