Mod my non folding wing mirrors to power folding mirrors
 

Hi all
I am sure that this question has been asked before but I have not been able to find a guide or information on changing non folding mirrors for power folding folding ones, I have 2 mirrors and their associated door wiring, including the door switch and control unit
Can anyone direct me to a post or a link that shows how to connect the door wiring to the existing car loom, my car is a 2011 cooper S r57 convertible the doner parts are from a 2009 cooper r56.
Any advice or suggestions where I can find suitable instructions greatly appreciated.