ECU wire color for knock sensor? 240sx KA24E

[onosqv]

Hey guys, I finally hooked up most of the wires for my safc ii. Was wondering what color wire the knock sensor and where it is located on the ecu.

I tried looking on the FSM and can't find it. Tried using apex'i diagram, and it points to an open slot.

Any help is appreciated. Thanks!

[ricebike]

confirmed: no knock sensor was put into the KA24E engines (89-90)

<grr...shakes fist @ Nissan for omitting this important sensor>