Thanks, I'll look into stiffening up the deck.
Originally posted by D-Bass:
stiffen up the deck. not just damping mat, which would help, but bolt some wood to the deck as well. you don't want it flexing. to get an RCA signal, you're going to have to get the signal after the amp. Those systems use a digital signal to the amplifier which controls volume, fade, etc. the signal level is not adjusted until inside the amp. it's also all canbus, and they make an adapter that reads the data for creating a remote wire
Pac Audio makes a module that goes inbetween the head unit and the amplifier that gives you RCA outputs and an amplifier switch lead. I shouldn't have a problem getting RCA outputs.