Running Plx M300 with a obd2b socketed p28 with Hondata S300. I am running only the wideband, no stock sensor. I have the power and ground wires connected already. As far as the grey and white wires go, I am pretty sure the grey wire isnt used. As far as the white wire goes, does it go to the primary o2 sensor input wire or to the EDL input? Any help apprieciated.