Originally Posted by Shmoo

I am installing my wideband O2 sensor for some street tuning at 8psi tomorrow just to get a feel for some tuning techniques. I have everything hooked up but I am a little fuzzy on what wire to splice for the O2 sensor at the ECU. I am splicing into my harness for my OBD2 P72 and one several sites, it says that pinout A6 is the one for my signal. I just want to make sure that this is correct because under the description, it says "Primary O2 Sensor Heat Control".

I need this wire to simulate narrowband O2 sensor readings to prevent a CEL.