Thank you.
I stopped on the way home from work and picked up a 14 and a 16 gauge fusible link in case I needed them.

Jump to red to yellow on the relay did fire up the starter.

fusible link showed good on multimeter.

red from fusible link to bulkhead male spade showed good on multimeter.

The bulkhead looked great.

I cleaned both male and female up, put it back together, and I had power again.

Not sure why shifting from park to reverse was the exact moment it went out.

Not sure why only one time I have seen the fasten belts message light a drive or two before this,

but it is running right now.

My harness is on borrowed time. Old, dry, stiff, and splices everywhere.