9Chapter 3: Installation5. Assemble the Heading Sensor (1) to the Heading Sensor mountingbracket (4). The shaft protruding from the base of the unit must clickpositively into the slot in the base of the mounting bracket.Note: The boat symbol embossed on the top of the active compassshould be facing forwards.D5506-11 2341 Heading Sensor2 Allen bolt3 Self-tapping screw4 Heading Sensor mounting bracket6. Pass the Allen bolt (2) through the aperture in the top of theHeading Sensor mounting bracket (4) and tighten using the Allenkey supplied.Note: You may need to loosen this later to adjust the Heading Sensoralignment , as described in Chapter 4, Calibration.3.4 Connection ProcedureTo connect your Heading Sensor to an NMEA 0183 compatibleinstrument, such as a XX Radar:1. Plug the 6ft (2m) Heading Sensor cable (supplied) into theHeading Sensor.2. Connect the black and red wires from the cable to thecorresponding wires from the NMEA 0183 compatible124_3c03.p65 09/05/01, 11:309