Thanks for the info. The wire, actually, the sleeve for the wire is black. It's not the VTC white wire. The connector is similar shape as ignition connector except there's 2 pins. The connector is at top rear center of the engine and the wire goes down between the heater hoses and engine, run right next to the EGR valve. My next question is if this is the detonation sensor wire, is it possible to splice. I could see only one wire in the black sleeve and don't know which pin it is connected now.