Mustang Mirrors How Do I Install Rear View Mirrors With Light That Blinks When Your Turn Signal Is On For A 2003 Mustang Gt?

How do i install rear view mirrors with light that blinks when your turn signal is on for a 2003 mustang gt? - mustang mirrors

I bought thses mirror and I do not know how to install or reinstall auto-x, which says you can not do this in Naperville / Aurora IL area or difficult to install myself ????? I need a signal cable running through the mirror? One person said that only she saw, but I know I need to know how to flash cable for connecting to .......