First, match the parking assist distance sensor and the O-ring, then as a pair, set them into the sensor receptacle on the back of the
Bumper, so that the small end of the O-ring faces towards the sensor membrane and the front of the bumper. Over the upper and lower points on the receptacle for the sensor, slide the strap to attach it. From the back of the bumper, snap the wire harness connector into the sensor connector receptacle. Set in place the bumper and reattach the battery negative cable.