Help with one more plug

[Muskrat]

This one should be easier than the last, I hope.

It's a green wire with a white stripe and red markings. Single spade connector. Looks like it connects to the O2 sensor signal wire. It's under the dash

I think I remember unplugging it but can't remember where and can't find the other end.

Any help appreciated. Picture below.

Thanks!

 

[GVR4_1057]

That is the factory narrow band o2 tap. It does not normally hook to anything.

 

[Muskrat]

Ah, thanks. Just wanted to make sure before I tried starting her, and screw something else up..lol