Hey guys, I need help. I am trying to figure out the best way to wire my after market system that I purchased. I have already upgraded the 6 BA speakers to Kickers a while ago. I just purchased a JVC double DIN NAV head unit with 5 preamp outs (2 front, 2 rear, 1 sub) and a 100W x 4 channel amp. I want to run the dash 3.5" speakers off the deck's bult-in amp and the four 6x9s off the 4 channel amp. I also got the harness that will allow me to bypass the factory amp as well. What is the easiest and cheapest way to wire this with what I have? I assume that if I use the front speaker preamp outs to run to the amp, I can not also use the front speaker wire from the head unit. Is that correct? Thanks for any suggestions/feedback.