Garmin TR-1 GOLD 906-2000-00 - Manual (Page 11)

Installation of the Sensor Ball
Hold the mounting bracket in the desired
position and drill through the holes into the
mounting surface. (Be sure that the wire
coming out of the ball can exit the ball
straight down.) Tap if necessary. Install and
tighten the three mounting screws as shown
in fig.8-a
If you need to make a paper template for a
drill pattern: The mounting holes are equally
spaced on a 1.224 inch radius circle.
Fig. 8-a
Fig. 8-b
Place the ball, wires down, into the
bracket and capture it by snapping the
cage over the ball, sliding the tips of the
cage between the ball and the legs of the
bracket. Do the two legs without the
thumbscrew first. Rotate cage upwards to
catch the bracket with the thumbscrew.
See fig. 8-b
Step one (Mounting the Sensor Ball)
Step two (Placing ball in bracket)
The Sensor (Compass) Ball needs to be mounted forward of the center of your boat. Make sure
you mount it away from magnetic disturbances (stereo speakers, wiper motors, anchors). You
will need to calibrate your compass on the water after installation of system and before you use
the autopilot.
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