Yes I have read that numerous times, but just need to know what harness to connect the button to.

Pretty much where are the second set of wires here:

If you decide to use the buttons that are attached to the wheel, you'll need to extract the harness from the wheel. For temporary use, I setup the harness to use the factory buttons. If you look at the diagram, you'll see the color combinations that you'll need. I removed the harness from the back of the "spiral" and spliced it into the harness that attaches to the buttons.

Button harness to "spiral" harness

Red -> Brown
Blue -> Green
Yellow -> Blue