Possible to connect new stereo with a clock?

Here's some shots of a fuse block of a 70 Dart dash:

View attachment Fuse Block A01 B.jpg

Here's the corresponding wiring diagram for it:

View attachment Fuse Block A07 B.jpg

Here's the orange wires that are the instrument light feed and will dim and brighten with the dash lights in the next two pictures:

View attachment Fuse Block A02 B2.jpg

Here's the fuse block diagram with the dimmer circuit circled in orange:

View attachment Fuse Block A07 B 3A Dim.jpg

Here's the fuse block diagram with the Live feed that you want to tap into for the constant live memory power in pink:

View attachment Fuse Block A07 B 2A Live.jpg

Here's the fuse block diagram with the accessory circuit circled that is keyed to the ignition key "run" position in red:

View attachment Fuse Block A07 B 1A.jpg

Here's the connector for the stock radio. You can use the red wire for the accessory circuit power that is on when the key is in run. Then use the orange one for the light dimmer circuit.

View attachment Radio Conn A03 B2.jpg