Is it powered direct or by another instrument?
Did you install a dedicated fuse?
Did you install a dedicated off/on switch or is it slaved?
Do you use a dedicated GPS antennae or split with another instrument.
Do you ever have the in-flight need to turn it off?
If you have both, why would you fly with one on and not the other?
If necessary, how is the Trig -2X and the TN-72 software updated?

Thanks for your reply.