I'm trying to patch up my old harness and there are two small wires that are black with a white stripe that come out of the pcm and go right along with the knock sensor and O2 sensor.. are these two ground wires? Mine are all messed up and the ends aren't there anymore.

What color is the driver side O2 sensor wire?

My stupid chiltons doesn't have a 93 wiring diagram. I need to order the factory manual but it'll take a while to get here. Can anyone help me in the meantime?

Thanks

 

Try the Speed Density LT1 Tech Forum there's a few guys over there with service manuals. I'd tell ya but I don't have access to mine right now.

 

I sent you an e-mail also.
Simple answer, blk/wht are the grounds. The O2 wire is purple.

 

Thanks for sending me the wiring diagrams. That really helped as I wasn't positive about that purple/white for the O2 sensor, and I guess those grounds need to go to the engine to ensure proper O2 signal.