Ok, I have a 1990 K1500 Silverado 4x4, reg. cab long bed, 5.7 carbureted (yes I know, original engine was fuel injected, why someone changed it back I don't know). The wire to my O2 sensor was cut and removed, but I need to replace it for a state inspection. Problem is, I have no idea where its supposed to connect to. I would assume it goes somewhere into the ECM, but have no specific information on where.

Anyone dealt with this before?