I did a quick search and have looked elsewhere (I even HAVE A PRINTED DIAGRAM!!!) but if anyone happens to know (Injuneer) I need the colors of the factory harness wires into the O2 plugs. Any info you can give is helpful. I have purple, tan, brown & black (or brown). I'm pretty sure purple is the signal, tan I thought was ground, black (or brown) and brown were the hi/lo res to the ecm but I get a 13 & 63 code (left/right O2 open). So if you happen to look up under your car, please pass on the order of the driver & passengers side O2 wires and even the matching wires on the sensor side as well. Thanks a ton, I've been wrestling with this for a week. LOL

Eric

 

They should be the flat, 4 wire connectors, just like 1995.

 

I guess I didn't explain very well. I melted my passenger side O2 plug. I swapped it out with a GM harness and posi-locks and hope to solder it this week. I'm not 100% sure of the order that the colors go (i.e. purple on the harness side to tan on the O2 sensor side, black on the harness side to black on the O2 sensor side, and so on) so if anyone can pass that info on to me I'd greatly appreciate it. I looked under a different year LT-1 and the colors were completely different and the diagram I have explains what wires do what but not the order, I do have the O2 sensor wires figured out as well but with all that info, I'm still not getting it figured out. So I thought I'd use the K.I.S.S. method. LOL Keep it simple stupid and look under a 94 LT-1 automatic and see exactly what order the wires are in and what colors they go to in the O2 sensor. Thanks again and I'll be checking out your tech site Shoebox.

Eric

 

Shoebox,
After checking out your tech pages (very excellent website/info BTW), I'm going to try and use your diagram. It's much easier to follow than the alldata 94 Diagram I have which doesn't have both sides of info (O2 Sensor AND O2 Harness side). Thanks again and I'll post back how it turns out.

Eric

 

:NOTE TO SELF: Install O2 Sensor for proper use!!! I was "testing" or trying to get them to work outside the exhaust. I figured out by swapping or comparing voltage between the ones still in the car that I needed to actually install them (yes, screw them into the exhaust bung) before they'd work. All is well for now. Thanks to Shoebox for the reply.

Eric