"keep it clean"

It has it's own color code, but the instructions show you the color code chart for factory compared to KIC harness. So it makes it simple to match up. You have to download the instructions from their website. Doesn't come with kit(I have no idea why but I'm sure it's to reduce overhead)
Yeah even though the wires are marked you should download/email request the instructions. There is probably a wire-to-wire matchup for the column in there.