I have previously posted, this time with a pic to help explain.

http://i45.tinypic.com/2ds1hqe.jpg

Good morning,

I'm at a loss here. I do not understand what you are describing from your drawing.

Can you take a picture and post it to this item.

I cannot determine if you have incorrect lighting devices, poor wiring or a bad switch. What is the failure that you are having?