Does anyone know where the wire that comes out of the O2 Sensor leads to?

Mine is just hanging there and need to attach to smoething.

 

Rear of the engine. Under the dynamic chamber. The single shielded wire, exits just off center line of the engine, biased towards the passenger side. Original color was grey. Probably crispy brown now. Hard to get at, thats probably why it is'nt hooked up. You may have to take the dymanic chamber off to find it if somebody broke it . Yup. Single conductor shielded wire. Then again if you mean everything is hooked up and where the other end of the wire is, its at the ECU under the passengers feet. The ***** of their feet. Mounted at an angle. See the free schematic at http://www.fc3s.org/ in the free factory service manual download. Or if you wish at http://www.iluvmyrx7.com/