Tach sensor wire not by alternator

[DARTHV6]

I’ve looked at old post about locating the tach sensor wire that’s near the alternator but I can’t find it on my friend’s car. (I’ll try to attach a few pictures.) My car, it’s right there next to the fuel pump relay wire. Mine is a white wire with a green connection. (First picture) His has the fuel pump relay next to the firewall. I don’t see anything that looks like a white wire with a green connection. I know there’s a white tach wire that leads to the computer but it’s a mess where that is! I just want to connect a tachometer for him. Hopefully someone can Identify the wire for me from the picture? (2nd picture is his)
Thanks!
Art