96 dx
got obd1 motor in obd2 chassis and only need the primary o2, but i dont know which engine harness plug to plug my o2 sensor. is it the one with the 2 black,1grn,1wht or the other o2 plug?

 

yeah u are right. 2 black. one green.one white.

 

you sure? haha because i forgot which is which when i swaped it. im talking about which is the primary o2 plug from the engine harness, liek on the engine harness theres one that has a matching color plug as the o2 and the other plug and the 2nd o2 plug has diff. colors . not the o2 itself. but if thats it then coo

 

96 DX O2 wire colors harness side (O2 side)

primary
white (white)
green/black (green)
black/white (black)
black/yellow (black)

secondary
white/red (white)
red/yellow (green)
black/white (black)
black/yellow (black)

 

great