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Connecting a Garmin® GRA™ 10 with a GRF™ 10 for Rudder Angle Information
Vessels with an analog rudder angle sensor can use the GRA™ 10 rudder angle adapter to convert the rudder angle sensor information into NMEA 2000 data and display it on a Garmin® chartplotter. If a boat does not have an analog gauge, the user can obtain this information by combining a GRA™ 10 adapter cable with the GRF™ 10 rudder feedback sensor. A NMEA 2000 rudder feedback sensor can be used in place of a sensor plugged into the 'FEEDBACK' port on a Garmin® autopilot electronic control unit. To perform the installation, the user must use a GRF™ 10 extension cable to avoid invalidating the warranty on the GRF™ 10 rudder sensor.
Wiring GRF™ 10 extension cable to the GRA™ 10 Adapter cable
Connect the GRF™ 10 extension cable to the GRF™ 10
Cut the other end of the GRF™ 10 extension cable
Wire the GRF™ 10 extension cable to the GRA™ 10 using the table below
When installing the GRF™ 10 extension cable to the GRA™ 10, the GRA™ 10 requires connection as a Generic Voltage (0-5Vdc) Sensor. Use the table below for wiring purposes:
| GRF™ 10 Extension Cable Wire Color | GRA™ 10 Rudder Angle Adapter Wire Color |
| Red | Red |
| Black | Black |
| Yellow or Orange (Whichever is available) | Yellow |
| Drain (If available) | Drain |
Note:
• Not all GRF™ 10 have an available drain wire. If no drain wire is present on the GRF™ 10, leave the GRF™ Drain disconnected.
• Cutting the connector off on the GRF™ 10 extension cable voids the warranty as it is considered physical damage. Once the extension cable is used in this manner, it is no longer eligible for return, see Related Content below.
When installing the GRF™ 10 extension cable to the GRA™ 10, the GRA™ 10 requires connection as a Generic Voltage (0-5Vdc) Sensor. Use the table below for wiring purposes.
Once the products are installed follow the calibration instructions for the GRA™ 10 to complete the installation.