I got a Lutron Motion Sensor for my kids' playroom downstairs (At 4, 10, and 14, they haven't figured out that light switches can be turned off). The lights down there are controlled by two different switches. When I took out the original switch, I noticed there was an additional red wire, I am used to seeing only two black ones plus a ground wire. I was told to leave out the red wire and put a wire nut on that, so I did. The second switch overrode the motion sensor and controlled the lights. When that second switch is on, the motion sensor does blink the orange light and I can enter the settings I want (so I know the motion sensor is receiving power). When that switch is off, the sensor doesn't work either. I took out all the wires and put wire nuts on them and left the switch in just for looks but it does nothing, and the motion sensor doesn't work. I was told to put all the wires for the second switch into a wire nut to fool the motion sensor into working, and that ended up tripping the breaker. I should add that the second switch also had a red wire on it also. How can I fix this?