GPS Transmit Line connections

[ChrisFlynn]

I am installing EFIS-D100, HS34, EMS-D10, GNS430W GPS, and a GTX327 transponder.

Since I have a HS34 in the system, do I need to attach the GPS transmit lines in the harnesses for EFIS (yellow/green wire connected to pin 22 in D-25 connector) and EMS (pin 19 in D-37 connector) to the GPS, or does the HS34 take care of this for me?

 

[dynonsupport]

The ARINC connections take care of all of the Dynon to 430 communication. There is no need to connect the RS-232.

 

[PhantomPholly]

However, if you are a "Belt AND suspenders" type you CAN hook up the serial lines, too. Then you would see two GPS connections in the HSI setup along with one Nav connection - if for some reason the wiring failed in flight you could switch to the serial connection as a backup.

You only need to hook up Nav/GPS lines to the HS34. The DSAB wires communicate everything from there to the EFIS units.