Ok I just did an engine swap and I see my front stream 02 sensor plug is not connected to anything!

Can someone help me find which/where the harness plug I need to plug into is?

Location, and or color of wires would help greatly.

Of course I've searched the forums and Google and I'm not finding what I need

Many thanks

 

N/m I found it lol

Giagantic 4 prong female mounted to back of engine block. On top