Where does this go?

[brainbug007]

The ignition barrel/assembly hasn't been touched for what i can tell I can tell but I'm a bit of a newbie that way. It was just unplugged when I took the loom out. It just looked like the yellow/black wire was cut at some point in the past before me as it was joined up with a terminal block when I took it apart. The donor was indeed running as I drove it home because I didn't have means to move a non-runner.