BAE 3200 Jetsteam - GPS not working.

[hellsvien]

Good Morning/Afternoon,

I'm new to the forums here and would like to start off by asking you kind people a question regarding the BAe Jetstream 32.

I've finally gotten this amazing plane to work on my system well. One thing however that is frustrating, is the lack of GPS guidance in the manual. I've read the PDF inside and out...I can control the aircraft from Cold and Dark till Landing and shutdown with no issues.... I just cannot for the love of me get the GPS to work. I've been trying to use the default, and also the two extra addon GPS'. 

I cannot use RealityXP GTN650, or the RealityXP GTN750 ---AT ALL---. 

How do I use these? Please help me and yes I've been googling my fingers off.