Garmin GRF 10 Rudder Feedback Sensor, For GHP 12, For GHP 20, Magnetic Sensor, IPX7, 2 m Cable

Overview

The Garmin 010-11829-00 is a GRF 10 rudder feedback sensor that reports real-time rudder angle to a compatible Garmin autopilot ECU through a 12-pin rudder feedback connector. The attached cable is 2 m (6.5 ft) long, and the run can be extended to a maximum of 15 m (49 ft) using extension cables. The sensor is waterproof to IEC 60529 IPX7 standards and operates on a nominal 4.5-5.5 Vdc supply provided by the autopilot system.

This sensor mounts in the steering compartment and links mechanically to the tiller arm so the autopilot can “see” rudder position instead of estimating it. That’s most noticeable during low-speed handling, docking, and tight maneuvers where rudder angle awareness helps the steering system stay smooth and avoid pushing into the stops.

Key features

• Magnetic, contactless sensing for rudder-angle feedback without a wear surface from friction-style sensors
• Connects to Garmin autopilot systems that have a 12-pin rudder feedback connector on the ECU
• 2 m (6.5 ft) sensor cable, with support for up to 15 m (49 ft) total cable extension
• Maximum travel range of 140° stop-to-stop (70° from center to each stop)
• IPX7 water rating (IEC 60529) for wet steering spaces and routine washdown exposure
• Compact footprint: 60.8 x 70 x 191.4 mm (H x W x D), 157 g
• Compass-safe distance of 1 m (3.2 ft) for placement planning near magnetic compasses

Installation and setup

Plan the mounting location with the rudder amidships. The sensor must sit parallel to the tiller arm, and the sensor rotation axis should align with the rudder rotation axis. For correct geometry, match the distance from the tiller rotation axis to the ball-joint point with the distance from the sensor rotation axis to its ball-joint point.

The linkage rod should sit level when connected; if the mounting position forces an angle, keep it within +/- 5° of level. During calibration, the autopilot system learns starboard, port, and center positions from the helm control or a connected chartplotter, so install the sensor with the rudder centered and ensure the steering can move freely through its normal range.

Compatibility and fit

The GRF 10 is built for steering systems with a mechanical tiller arm or equivalent linkage point where a ball-joint rod can be attached securely. The included connecting rod is 300 mm (11.8 in.) long and can be shortened to suit the available space and the steering geometry.

Keep the steering stops in mind. The sensor’s travel range is 140° from stop to stop, and exceeding that range can damage the sensor, so installations with unusually large rudder travel should be checked carefully before drilling and final mounting.

Electrical and system integration

Route the sensor cable back to the autopilot ECU and connect it to the 12-pin rudder feedback port (commonly identified by an orange connector on supported systems). The sensor cable should not be cut to change length; use extension cables when the ECU is farther away.

Materials and environmental limits

The housing is made from polyoxymethylene (POM) and is rated IPX7, which suits steering lockers and similar compartments that see moisture and spray. Operating temperature range is -15°C to 70°C (5°F to 158°F), which covers typical seasonal conditions in most helm and aft compartments.

What’s included

• GRF 10 rudder feedback sensor
• M4 screws (5)
• M6 locknuts (2)
• M6 nuts (2)
• Washer
• Tiller arm mount
• Ball joint assemblies (2)
• Threaded rod

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