adding keyless entry to a 2004 Taurus SE

I have a 2004 Taurus SE. It was a rental and didnt have keyless entry on it. I want to add it and a trunk pop. It has power locks and trunk. I'm gussing that it may already be wired for it, there is an empty connector in the trunk. Does anybody know where I can get a wiring diagram to add it or how hard it may be.?
Thanks

Well thanks to nobody I found a wiring list that calls out the colors of the wires, location and description, If anybody need a copy email me.