Ok so I am wiring my buddies air/fuel gauge in his 91 integra ls. I am going to run the power to ignition,then ground, but the signal wire i am going to run to the ecu...the question is ,does anyone know which wire on the ecu would be the wire I need? I checked HASport and on the site it says on their little chart that pin C16 is the primary O2 Input...Does anyone know what color or even if this is correct?? Thanks for the help!!!