I tried to install my stereo, and no sound sound when i use the cd player, but radio works fine. I googled this and is a common question.

Wich wire is the factory amp activation wire, and what do i splice this into so all is good??

I have a harness, and all is hooked up except the lil harness with two wires and a white end (what is that, and what do i do with it??)

Once thats done I have a sub to hookup , cant wait, so plz help me out.

99 slt 5.9l v8