need wiring help 08 install after mark mirror

[687072mustang]

I have a 2008 GT convertible. I would like to install an after market mirror with temp/compas and lights. Anyone know wire colors, location for:
12 v key on/ key off
12 v constant
wire from door activated switch?
If there are plugs already wired in, location would be a great help
Thanks srj [email protected]

 

[xxrequiemxx]

I am interested to see how easy of an install this is... If its easy - im interested in doing it as well.