Mercury – Remote Control Ignition Choke Extension Harness | Wiring Extension | 84-17829A20

The Mercury Remote Control Ignition Choke Extension Harness is designed to provide additional wiring length between the helm control station and the engine. It is commonly used on larger hulls or dual-station setups where standard harness lengths do not comfortably reach. Using a purpose-built extension harness helps maintain clean rigging and avoids stretching wiring or adding splices that can create stress points.

Maintaining properly routed wiring supports more consistent starting and choke operation while reducing strain on connectors and terminals. Routine inspection, secure fastening, and avoiding sharp bends or pinch points can help protect the harness from chafe and vibration, supporting dependable electrical contact over time in typical marine environments.

Key Features

• Ignition & Choke Wiring Extension – Provides added reach for longer helm-to-engine control runs
• Eight-Lead Harness Layout – Intended for standard ignition and choke wiring in mechanical systems
• Marine-Grade Construction – Designed to handle vibration, moisture, and typical engine-compartment heat
• OEM-Style Connectors – Supports secure electrical connections without wire modification
  
  

Engine & System Compatibility

• Mercury outboards
• Mechanical remote control systems
• Non-ECM ignition systems
• Legacy two-stroke and early four-stroke Mercury platforms
  
  

Important Notes

• Confirm engine configuration, ignition type, and connector style before ordering
• Route the harness away from chafe points and secure it properly
• Allow appropriate slack for normal movement and vibration
• Verify ignition and choke operation after installation
  
  

FAQs

1) What is this ignition/choke extension harness used for?
It extends ignition and choke wiring between the control station and the engine when additional length is required.

2) When is this harness commonly needed?
It is often used on larger boats or dual-station setups where standard wiring lengths are insufficient.

3) Does this harness replace original ignition wiring?
No. It is designed to extend existing ignition and choke wiring using OEM-style connectors.

4) Is cutting or splicing required for installation?
No. The harness connects directly using factory-style connectors.

5) Why choose an OEM Mercury extension harness?
OEM harnesses are built to Mercury wiring standards and connector specifications, helping reduce poor pin contact, corrosion-related issues, and intermittent electrical behavior.