Custom blinkers on a 1990 Cadillac Seville?

Question

I know everyone has seen those mercedes or other new cars that when they hit the turn signal they have a light on the mirrior that flashes too, I want those on my Cadillac Seville, I have seen people have it done to their cars on cardomain but Im not sure where I can go to have this done. Is this something a place like auto acoustics ( a custom car audio shop) could do?

Answer 1

http://www.kwmuth.com/products/smtechnology.htm
http://www.auto-care.com/turnsmart.html
Search for turn signal mirrors and you'll probably have to find a shop or someone willing to wire them up to your existing turn signal wiring.