Well I'm still here and willing to help him, but we will need more details for anyone here to comment.
We know there is a cable and he wants to turn on a light. Current on the light?
Maybe his English is bad, I did not catch the smack he did on me. He did not bother to fill in his location field either, so he might be a tad lazy.
If he was in the US (we have some lazy people, I know, I live here) I could have sent him my phone number and helped him. But my phone calls are only free in the USA for me to call him back.
Mike2545, thanks for having my back. Just do not spend too much time on the homework guys.