Well this may have been posted before but I can't find it in search. Anyone take an Si with standard stereo and put in a double din non factory nav? If so what did it take to use with factory amps and any extras needed with it? I have installed all kinds of stereos in my life but I have successfully avoided cars with built in amps and odd dash layouts.

 

when you buy the wiring harness for the navi, it should hook up your navi to the stock amp i think. you also need to buy the navi dash kit and then its a "simple" install