Once the plug is disconnected from the ECU you'll see it's actually in two pieces. One part I didn't get a picture of is a white slider that sits in between the two pieces locking them together via a french cleat. Just use a pick to pull at it and it slides out very easily. Then you'll see tabs holding these two black pieces together as seen on the edge of the plastic harness cover here. There are two to each side. One in the front and one in the back on each side. Four total.