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Icom a200 and garmin gma340 wiring

Thread starter Liron Mishal
Start date Sep 25, 2023

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Liron Mishal

Member

Sep 25, 2023

Hi
I'm in the process of adding a second radio and audio panel to my plane.
I'm struggling a bit with the wiring of the icom a200 radio to the garmin 340 audio panel.

It seems like the mic and ptt of the icom has a separate ground from the headphones, but the gma 340 uses the same ground for all functions (mic, headphones, ptt).

Is the a problem connecting the mic and ptt ground to the headphones ground on the icom side?
I attached the wiring diagram from both manuals

Any advice will be greatly appreciated!