Unable to talk to GARMIN GNS 430

[asbasb]

I have a D100, a D10a, an HS34, and a Garmin 430. Pins 46, 47, 48, and 49 of P4001 of the Garmin 430 are connected to pins 23, 11, 25, and 13 of the male connector (female socket) on the HS 34.
I know that the HS 34 is talking to the D10a because I can adjust the heading bug on the HSI using the HS 34.
The Garmin is not talking to the HS34.
I set the Garmin to navigate Direct to a destination, but no course or deviation appears on the D10a HSA. I did set up the Garmin to transmit over the ARINC 429. What do I have to do to get the Garmin nav info to appear on the Dynon HSI display?

 

[Dynon]

When you're on the HSI page and press the NAV SRC button on the HS34 that should toggle between the radio (green on the HSI) and GPS (magenta) sides of the 430. But as a prerequisite of that, make sure you have all of the settings on both the Garmin and the Dynon set like this.