I doubt every switch in the house is a switch loop.

The incoming hot (white) should connect to the KP black, and the returning black to the KP red.

The improper way to do what you want is to:

Connect the KP black to the incoming white, the KP red to the returning black, and the KP white to the bare wire. (Don't tell nybody I told you to use the bare wire; it's a secret!)

I would first make sure the white is used as the hot by checking that it's connected to the black behind the receptacle, just in case someone didn't do that properly.

Larry
www.fineelectricco.com