Mercury – 3-Pin Extension Harness (20 ft) | Rigging Accessory | 84-8M0191746

Overview
This 20-foot extension harness gives you the extra reach needed to run the steering 3-pin lead from the rig center breakout to the electric steering actuator. It’s mainly for boats where the wiring path takes the long way around or the actuator sits farther back than usual. Each actuator uses its own harness so the wiring stays relaxed instead of stretched. With the extra length, routing is easier and the steering system tends to feel a little smoother in slow, tight maneuvers.

Key Features
 • 20-Foot Extension – Plenty of room for longer rigging runs.
 • 3-Pin Connector – Plugs directly into the steering breakout lead.
 • Built for Electric Steering – Designed for Mercury’s electric steering systems.
 • One Per Actuator – Each actuator needs its own extension.
 • OEM Marine Wiring – Durable insulation made for vibration, spray, and heat.

Engine & Boat Compatibility
 • Electric steering actuators
 • Digital Throttle and Shift
 • SmartCraft network
 • Single- and multi-station layouts

Performance & Practical Benefits
The extra length lets you route the harness naturally instead of forcing sharp bends or tight squeezes. When the wiring isn’t under tension, the actuator gets a steadier signal, and you’ll usually notice smoother steering at idle or when easing into a slip. It also helps cut down on wear since the harness isn’t rubbing or pulled tight.

Why Buy OEM
OEM harnesses fit the connectors the way they should and use proper marine-grade materials. They hold up well with real-world vibration and salt spray, and they help prevent the little electrical quirks that often show up with off-brand wiring.

FAQ
Q1: When should I choose the 20-foot harness?
A: When the standard or shorter extensions won’t comfortably reach the actuator without stretching.

Q2: Does each actuator need its own?
A: Yes—one harness per actuator.

Q3: Is this good for saltwater boats?
A: Yes. Just keep the connectors clean as part of your normal washdown.

Q4: Anything to check before installing?
A: Make sure the routing path is smooth and clear of sharp edges.

Q5: What if the steering still feels off afterward?
A: That usually comes down to calibration or another wiring issue—not this extension.