Is this factory 1975 stuff

Looks light blue in my pic, but the blue one closer to the valve cover does come out of one of the spots you pictured. Goes through the connector, then to the AC drier. Someone may have added a connector so they did not have to deal with removing the terminal from the factory connector if the wires were removed from firewall. The other blue comes out of the harness and goes to the alternator.
I wonder if the one coming of the alternator powers the A/C. I have everything wired exactly as it worked in my 69. Than I have all these extra wires. I also have a weird extra wire. Light green going into a plug, and than I guess a black ground coming out. I have yet to find an answer here. I call it disaster piece theatre, I hate wires.