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...