i have a obd1 motor into a obd2a car.


need to run the car through inspection, do i just buy a downstream 02 sensor and can it be any 4 wire one?

i have to wire it into my engine harness i have a obd2a ex harness. going to be running a 0bd2b si computer, so i have a jumper harness do i wire it into the engine harness or the obd2b jumper?

going off of this wiring from katman

http://ff-squad.com/wp/?p=395


thanks guys sorry if its alittle confusing, this is the last part i need to figure out

 

Either one will work