Decided to place the backup power splices below the GAD 27 near the DC Lighting splices.
Figured out an approach to print and manage heat shrink labels and printed labels for the GDU connectors and for the labels on the other end of each of the GDU wires.
Finished cutting the remaining wires for the GDU connectors and started terminating them. Will shrink the labels when I assemble the connectors and figure out the best location for them. Read through the termination and connector housing assembly instructions again and found more parts I needed to order. I added the parts to my McMaster Carr and Aircraft Spruce shopping carts. I also added more ring terminals to my Mouser cart.
Continued looking at parts and options for completing the Pitot/Static/AOA plumbing and decided to use a kit from Stein Air.