On Sunday, November 17, 2019 at 10:17:18 AM UTC-8, wrote:
Is it powered direct or by another instrument?
Did you install a dedicated fuse?
powered by the S80 vary, which is connected to "nav" breaker

Did you install a dedicated off/on switch or is it slaved?
Slaved to S80

Do you use a dedicated GPS antennae or split with another instrument..
Dedicated

Do you ever have the in-flight need to turn it off?
no

If you have both, why would you fly with one on and not the other?
ADS-B out must be on, if installed, per FAA regs. Flarm is my logger, so always on.

If necessary, how is the Trig -2X and the TN-72 software updated?
Trig 22 must be factory updated, I believe. Not sure about the TN72. I have both.

Thanks for your reply.

Other notes: I panel mounted the USB connector for the FLAM on the panel to facilitate updates and flight downloads. I was frustrated by not being able to see the LED on the Flarm brick, so I used an optical audio cable to remote it. I glued (after some belt sanding) one end of the optical cable to the side of the USB connector on the Flarm side, such that it lined up with the LED. On the panel side, I remove some of the optical connector jacket, exposing 1/4" of brass tubing with fiber inside. Then I drilled a small hole in the panel near the USB connector and epoxied the brass tubing/fiber in the hole. Now I can see the LED on the panel!

Matt