Couple of stereo wiring questions
 

I am planning on adding a amp and sub (subs) to my mega. I have the full REC system in the truck and am adding a line level converter. Wondering if anyone has the wiring diagram or color of wires for the front door speakers to tap into. And if you know how i can get the remote on signal for the amp. Thanks in advance. Also i would just use my amp since it has high level input but i dont have the 4 pin connector that is supposed to plug into the amp for it.