Putting On the Heart Rate Monitor
You should wear the heart rate monitor directly on your skin, just below your sternum. It should be snug enough to stay in place during your activity.
-
Snap the heart rate monitor module
onto the strap.
The Garmin® logos (on the module and the strap) should be right-side up.
-
Wet the electrodes
and the contact patches 
on the back of the strap to create a strong connection between your chest and the transmitter.
-
Wear the heart rate monitor with the
Garmin logos facing right-side up.
The hook
and loop 
connection should be on your right side.
After you put on the heart rate monitor, it is active and sending data.