Greg456

on the IAB sensor thers a 2 pin connection, I know one wire goes to the ecu but i don't know where the other wire would go?

Greg456

ttt

tiresmoke

OBD1 Pink/plu to A17 other wire (blk) to ground
OBD2 Pink/blu to A26 other wire (YEL/BLK) to 12V+ a simple place for that is the YEL/BLK at the IACV

Greg456

Pink/plu did u mean blue? if not then what color is that?

Thanks for the reply.

VTECVillain

I don't want to get any arguments started or anything, but honestly I have wired up both of my own cars, and a few others just like it using the OBD1 P72 or P13 and all have been wired like this: PNK/BLU to A17 and then the BLK or YEL/BLK (depends on the OBD of the harness used) to 12V+ YEL/BLK and the IAB has worked properly.
Here's a scanned section of my 95 Integra Helms manual to illustrate how the IAB junctions into the YEL/BLK 12V+ source at A25 and B1. The OBD2 and OBD2B ECU's both use a ground instead which I can also scan from my 99 Integra Helms if needed.