I have a '23 BaseSquatch built in late December '22 into January '23 with the Sub Delete.
+ Fusion amp and 6.75" 4 ohm dual voice coil Kicker sub.
+ 4" coaxial Kickers with 4 ohm 600Hz base blockers in dash purchased at local audio shop
+ 4" coaxial Kickers in rear pods
+ 6.5" coaxial Kickers...
Pretty sure that is the pre-run aux wire for the back. I don't have the wiring diagram in front of me, but, that is what they look like upon termination and that color combo looks familiar.