Can you instruct me on what to connect to allow the Garmin 155xl to provide input to a D100 in order to use the HSI display on the D100 for the Garmin? I do not have an HS34, only the D100 and autopilot servos. I'm thinking I use Pin 24, which is the channel 1 RS232 output. Other options are; Pin 19 channel 2 RS232 output, Pins 15 and 16 ARINC 429 output A & B.