Originally Posted by
sailingfun
Contact Garmin. They have excellent tech support.
Learned a few things.
1. Prior to the approach select green needles and dial in the course. Go back to pink needles.
2. While being vectored in FMS NAV keep an eye on the MSG function on the GTN. You'll get a message to "ENABLE G/S OUTPUT?" or something like that. Select YES.
3. Eventually, "FMS" will show on the NAV display (just above the G/Slope) and the G/S display will appear. Select NAV (Green needles).
4. Select APP. The AP will NOT couple to the GS in magenta. Only green.