Humminbird GR16 - Manual (Page 8)

5. The Fishfinder Control Head outputs NMEA signals thru the "pigtail" cable attached to
the end of the GR16 GPS Receiver Cable for connection to devices such as autopilots.
Connect the NMEA Out (White Wire) of the cable to the NMEA In of the device you are
connecting to your Fishfinder. The pinouts of this cable are as follows:
• Red Wire, +12V (output voltage only)
• Black Wire, Ground
• White Wire, NMEA Out.
CAUTION! Please use caution before connecting the red +12V wire to any other NMEA device.
This is an output voltage provided by the Fishfinder unit and GR16 receiver and should only be
connected to those NMEA devices that need a 12 volt input.
NMEA Output
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