i do have the pinout supplied by Symtech, but its missing the pin 31, it has pin 36, but no 31 and ive tried to call and email symtech to no avail.. i cant really wait around : ( should i add the pin myself?

symtech emaailed me back and said pin 31 is labeld IAC.. i have an iac 2 B, is this the right wire? the wires they call out state " pin 36 and pin 31" i have a brown wire labeld pin 36, so i figure there would be one that says pin 31...? they said the right wire might be green with a white stripe..? ne info