Everyone seems to wire (or splice) the black (GND) wire from the LEMO (BOSE) connector to the AUDIO Lo (RETURN) Pin in the GMA.
I'm utilizing the LEMO only, I don't have the standard GA connectors. My connector incl. the wire bundle comes from David Clark.
Garmin GMA240/245 Install manual suggests to connect the black GND wire to the Backshield.
I have mine connected directly to the aircraft GND according with the David Clark LEMO diagram and I'm picking up some noise, incl. strobes.
So what's the best solution? Put the LEMO (GND) on the backshield (which doesn't indicate to me there would be much difference from my current wiring) or connect it directly to the AUDIO Lo (RETURN) Pin?
Attached is a screenshot from the GMA245 install manual.
Thanks,
I'm utilizing the LEMO only, I don't have the standard GA connectors. My connector incl. the wire bundle comes from David Clark.
Garmin GMA240/245 Install manual suggests to connect the black GND wire to the Backshield.
I have mine connected directly to the aircraft GND according with the David Clark LEMO diagram and I'm picking up some noise, incl. strobes.
So what's the best solution? Put the LEMO (GND) on the backshield (which doesn't indicate to me there would be much difference from my current wiring) or connect it directly to the AUDIO Lo (RETURN) Pin?
Attached is a screenshot from the GMA245 install manual.
Thanks,