Mercury – Diesel Fuel Level Harness | Fuel Sensor Input Harness | 84-8M0089989

This Mercury Diesel Fuel Level Harness is designed for diesel applications that require clean, reliable fuel tank level input into the engine or helm electrical system. It works in conjunction with the appropriate diesel vessel sensor harness to deliver accurate fuel level data without signal interference.

The harness supports up to two fuel tank inputs, depending on engine configuration, making it suitable for both single- and dual-tank diesel setups. Marine-grade wiring ensures durability in harsh marine environments, resisting vibration and moisture. Once installed, the harness provides stable signal transmission without the need for calibration or adjustment.

Fuel level readings remain consistent and accurate, free from electrical noise or dropouts. The organized wiring layout helps reduce clutter behind the helm, supporting cleaner installations and easier future service. During everyday operation, fuel level data remains dependable and predictable.

Key Features

• Four-Pin Fuel Level Harness – Dedicated diesel tank level input connection
• Dual Tank Capability – Supports up to two fuel tank signals when paired with the correct diesel vessel sensor harness
• Diesel-Specific Design – Engineered for Mercury diesel electrical systems
• Marine-Grade Wiring – Built to withstand vibration, moisture, and harsh marine environments

Engine & Boat Compatibility

• Mercury diesel engines
• Diesel vessel electrical systems
• Fuel level sensor circuits
• Diesel applications from calendar year 2014 and newer

Important Notes

• Requires the appropriate diesel vessel sensor harness for proper operation.
• Designed specifically for Mercury diesel applications.
• Ensure secure electrical connections during installation.
• No calibration is required after installation.

FAQs

1) What does this fuel level harness do?
It transmits fuel tank level data from diesel fuel sensors into the engine or helm electrical system with stable, interference-free signal delivery.

2) How many fuel tanks can this harness support?
It supports up to two fuel tank inputs when used with the correct diesel vessel sensor harness.

3) Is this harness compatible with gasoline engines?
No. This harness is designed specifically for Mercury diesel applications.

4) Does this harness require calibration after installation?
No. Once installed, it provides stable signal transmission without the need for calibration or adjustment.

5) Why choose an OEM Mercury fuel level harness?
OEM harnesses ensure correct connector fit, wire quality, and signal integrity, reducing troubleshooting and maintaining accurate fuel level readings over time.