Installed the wifes mirror this weekend successfully.
Anyone looking to do this easy upgrade here's the cheapest place i found. great customer service.
http://www.tascafordparts.com/
Part number: 4L3Z17700B
Here the instructions as well: http://exchange.tasca.com/graphics/files/homelink.pdf
She can now know the outside temp. open the garage and not get lost lol!