[n86121]

While initially thinking just to replace my "Ye Olde GPS moving map"
(no longer made, supported, or reliable),

I realized a completely clean install could

greatly simplify installation
be built and tested 'on the bench' (which it was)
not lose days/weeks(months?) trying to retrofit into various layers of 1990s harnesses,
assure 100% compatibility between everything,
make it all much simpler and more reliable going forward
eliminate the next thing that was going to fail or lose support

For example, my $5k installed L3 NGT2500 already no longer made or supported.
KX155 parts becoming scare/gone
KN62 parts also becoming scarce/gone

Looking at even the 'modern' point-to-point wiring,
I predict in 20 years

avionics will be boxes with
Power connector in
Ethernet cable to central avionics hub
Configure and communicate w IP protocols
RF antennas as needed
Update dbases by cell/wifi/satcomm - maybe position driven?

But first, a LOT of FAA dinosaurs and ancient standards will have to settle into the tarpits.