Cognoscenti247

I am installing an AVIC-D3 and can't find the Amp Remote wire (Blue/White) to signal the amp to turn on. Anybody know where the wire is on a 2004 Silverado 2500HD SLT. Do I have to wire from dash to the amp under the center console?? Can I wire the blue/white wire to ACC power?? or is the blue/white Amp Remote Wire a specific output. Appreciate it...Thanks.