First DSP that I purchased and I have some questions about installation. The dsp has 4 inputs (Ch1 L, Ch2 R, Ch3 L, Ch4 R) and 8 outputs. My headunit; Pioneer AVH-X5800BHS has 3 sets of preouts: Front (L, R), Rear (L,R), Sub (L, R). I'm assuming the 3 sets of preouts from my head unit connects to the DSP's 4 inputs and the 8 outputs goes to my amps. The question is, there aren't enough inputs on the DSP to accommodate my head units preouts. How do I connect this? Also, the 12v wiring harness, there are 12 pins, are pins 10 - Blue - Remote Out: 11 - Yellow - 12V+: and 12 - Black - Ground are the only ones I should worry about?