I got a vtec harness off of an automatic 96-98 ex that i plan to use on my b-series vtec swap in an EK. I pretty much figured out which plugs I need and which plugs I don't need and which plugs i need to change out but I can find where the actual seconday o2 sensor is suppost to plug into. I found out where 3 wire go from the ECU side but i cant find where the sensor acutally plugs into. And are there going to be any other problems i am going to run into with using an auto harness

 

If i were you, i would just buy a 5spd harness. I did the same swap in my ek auto and just could not get the automatic harness to work. I even took it to some reputable shops and even they couldn't do it. They got it to run ok, but still couldn't get the vtec to work. So i just went out and got a 5spd harness and all my troubles were over.