Wasn't too hard. There are many different ways to do this, I'm sure. This is what I did.
2013 mirror has 7 wire connector
05-12 mirror has 3 wire connector
2013 Wire Colors:
Black, Green/Purple - Heating Elements
Black/White, Gray - Puddle Lamp
Yellow, Red, Blue - Mirror Motor
05-11 Wire Colors:
Yellow, Red, Blue - Mirror Motor
Conversion: 1 Side
1. Unpin the the wires from the 2013 mirrors.
2. Remove mirror glass from mirror
3. Pull mirror harness back through housing to gain extra access to wires
4. Remove heating element wires (I'm not worried about heated mirrors)
5. Clip pins off wires and install bullet connectors, then shrink tube (5 - total, if not hooking up heating elements)
6. Remove door panel and mirror from car
7. Remove A-pillar trim from car
8. Remove map light housing from car
9. Remove factory mirror plug from wire harness
10. Install 3 bullet connectors and shrink tube
11. Using 16-18 gauge wire, run two wires from mirror connector location into door, through door grommet, run wire up A-pillar and under headliner to map light housing area
12. Install 2 bullet connectors to new wires on end where mirror is located
13. Use 2 scotch lock connectors and connect the 2 new wires to the black and white wires of the interior map bulbs. (Gray wire from mirror to Black wire at map light, Black/White wire from mirror to White wire at map light)
*There seems to be a resistor or something inline with the Gray wire going to the puddle lamp. If you reverse the wire hook up from above, the light will not shine.
14. Install 2013 mirror
15. Connect all connectors (obviously, red, yellow and blue go together, they are the same on all cars)
16. Replace all panels that were removed
Repeat steps for opposite side mirror
This is just a quick and brief description of the install. I will try to add more pics soon. Let me know if you have any questions.