flightBox driving Dynon auto pilot 2

Hey Steve, busy before the big move, congrats. I just bought a USB to serial interface cable, how did you hook up to Dynon ( connectors and pins ) to drive the dynon serial interface? Any special string to setup in the dynon D10A to push “NAV” mode in A/P. Running the IflyGps version 10.2 with 3D vision. Latest ver r4