I'm looking to buy this engine harness but there's one cut plug on it and the seller doesn't know which one it is. He said its on part of the harness that's inside the cabin. He thinks it might be for rear o2 sensor but looks like its only 3 wire.

As you can see, its the wire at the bottom of the picture.

 

I think it is C-124 which connects to the dash harness, but there should be more than 3 wires in that bundle.

 

that part of the harness runs to the center console area around the shifter base. those cut wires go to the rear O2 sensor, the blue and grey connectors go to a ecu (cant remember what one it is off the top of my head) mounted in the center console under the radio/hvac controls and that group of ground wires get grounded directly in front of the shifter base on the passenger side to a bolt in the floor

 

how many wire does the rear o2 sensor have?

 

i want then harness to convert RS to ABS

 

you win. it is totally the rear O2 harness. only 4 wires go to it. The only one i can't see in the pic is the black wire...so it's probably just hiding.