Mercury – Vessel Sensor Extension Harness 5 Foot | Sensor Extension Harness | 84-899888T21

The Mercury Vessel Sensor Extension Harness (5 Foot) is designed for Mercury diesel applications where existing vessel sensor wiring requires additional reach. It is commonly used during rigging, repower, or retrofit installations when factory sensor leads fall just short of the vessel interface panel, bulkhead pass-through, or sensor mounting location.

The 5-foot length provides a clean extension without excess slack, loops, or wiring strain. By eliminating the need for splicing, this harness helps protect sensor connections from vibration, tension, and long-term wear while maintaining stable, interference-free signal transmission.

Key Features

• Diesel Vessel Sensor Extension – Extends existing Mercury diesel sensor wiring
• 5-Foot Length – Ideal for short extension requirements
• OEM Mercury Connectors – Ensure secure fit and proper signal integrity
• Factory-Compatible Shielding – Preserves clean, stable sensor communication
• Marine-Grade Construction – Built to withstand vibration, moisture, and engine-room conditions

Engine & Boat Compatibility

• Mercury diesel engines
• DTS diesel control systems
• Axius diesel systems
• Mercury diesel electronic monitoring networks

Important Notes

• Used only to extend an existing vessel sensor harness.
• Not a standalone sensor or primary harness.
• Designed specifically for diesel sensor circuits.
• Eliminates the need for splicing or custom wiring.

FAQs

1) What is this harness used for?
It extends existing diesel vessel sensor wiring when the factory lead is slightly too short during installation or rerouting.

2) Is this compatible with DTS and Axius systems?
Yes. It supports both DTS and Axius diesel configurations.

3) Can this replace a main sensor harness?
No. This is an extension only and must be used with an existing vessel sensor harness.

4) Why not use a generic wiring extension?
Generic extensions can introduce signal loss, electrical noise, or poor connector fit. OEM harnesses preserve shielding and signal quality.

5) Where is this typically installed?
Common locations include engine rooms, bulkhead transitions, rigging channels, or near vessel interface modules.