it apears it is all the way back....the connector at the end of the sensor pigtail has 2 wires goin into it...one of which is the shielding wire one of which is the signal wire.
usually they are wrapped alittle neater then yours but, if your worried about it, just re-wrap the wire.
I have no knock sensor on my motor. I have ears, i know what my motor blowing up sounds like.