O2 sensor wiring

Hello - I have a '96 XJ, 4.0/AW4. Something got wrapped in my rear driveshaft and ripped the wiring out of the downstream O2 sensor. I've been trying to locate the broken end of the wire to fix it, but for the life of me, I can't find it. Where does it come from?
Thank you.

It comes out of the engine wiring harness all the way to the PCM.

Thank you. I'll look again.