Mercury – Engine to Vessel Interface Panel Extension Harness 20 Foot | Sterndrive Harness Extension | 84-879312T03

The Mercury Engine-to-Vessel Interface Panel (VIP) Extension Harness is designed for diesel sterndrive installations where the interface panel is mounted a significant distance from the engine. It provides a factory-correct extension between the engine and VIP without cutting, splicing, or modifying original wiring.

The 20-foot length supports larger boats with extended rigging paths, wide beams, or deeper engine compartments. It allows smooth, stress-free routing while maintaining stable and reliable communication between the engine and vessel interface panel.

Key Features

• Engine-to-VIP Extension Harness – Extends communication between diesel engine and vessel interface panel
• 20-Foot Length – Designed for long-distance routing between engine and interface panel
• Non-DTS Sterndrive Compatible – Built specifically for Mercury diesel mechanical sterndrive systems
• OEM Mercury Connectors – Ensures proper fit and consistent signal transmission
• Marine-Grade Construction – Resists vibration, heat, and moisture in engine-room environments

Engine & Boat Compatibility

• Mercury Diesel 2.0L engines
• Mercury Diesel 2.8L engines
• Mercury Diesel 4.2L engines
• Mechanical (non-DTS) control systems
• Diesel sterndrive applications

Important Notes

• Designed specifically for non-DTS diesel sterndrive systems.
• Use only when extended distance is required between engine and VIP.
• Do not splice or modify factory wiring when installing this extension.
• Ensure connectors are fully seated and routing avoids sharp bends or pinch points.

FAQs

1) What does this harness connect?
It extends the connection between the diesel engine and the vessel interface panel (VIP).

2) Is this harness compatible with DTS systems?
No. This extension harness is intended for non-DTS diesel sterndrive applications only.

3) When is a 20-foot harness recommended?
It is commonly used on larger boats with long rigging paths, deep engine rooms, or wide-beam layouts.

4) Why use an OEM extension instead of splicing wiring?
OEM harnesses preserve correct shielding, pin alignment, and signal quality, helping prevent communication errors and long-term wiring issues.