I have upgraded to a Garmin GTN650 from a 430w. Can anyone help me with the proper settings for the GTN650 or any other trouble shooting ideas. Currently all of the nav functions VOR/ILS appear to be working on the HSI display but I do not get any GPS data to the HSI? GTN 650/ HS34/ D10a and D10 EMS installed. I was previously able to get GPS date when the 430W was installed. All of the speed settings are set to low since I have a trutrak Gemini autopilot. Any thoughts or suggestions would be appreciated! Thanks.