Question about Titan mirrors

I have a 08 LE with the tow mirrors. I did not know when I purchased the truck that if I didn't get the tow package I could have gotten power folding mirrors. I really need those due to the size of my garage and having to get out and fold the mirrors in everytime I get home. So I was wanting to know if all the wiring is already in place for the power folding mirrors. My mirrors now have heat and electronic adjustment. I don't have the switch inside where the power folding option switch would be. So what exactly do I need? Will the power folding mirrors hook up in place of the tow mirrors? Is the only thing else I will need be the switch? Thanks for any info you guys have.