ok i have a 1996 trans am. i just recently finished installing the new motor in it. i got this car in few pieces, and while looking under the car i noticed on the pass side there are two harnesses for o2 sensors. one is square and one is flat. which one of these is for the pre-cat converter? i am having the post cat ones deleted and wont be putting sensors in there place. thanks

mike

 

flat ones are pre cat

square ones are post cat

 

thanks a lot i appreciate it ....