I plan on a small system for my car this spring because I am replacing the carpet it in, so I might as well run all the wiring when I do this. I plan on Focal Utopia 6.5 components in the doors. These will be run from my old school Arc Audio amp (forgot the part # but it's 4 channels at 100 watts per, at least I think it is). Regardless, I am going to run two channels for the components then I'm thinking of bridging the last two for a single 10" sub. 3 Questions because I haven't touched car audio in 15 years : What sub recommendation? How to wire? I am thinking and correct me if I'm wrong: Pre-out from receiver to amp using RCAs. Power from amp to fuse then to battery, ground to chassis. Speaker wire from amp to the components crossover. Bridge last two channels then to sub 3. Is it true to run power wire on the opposite side as the RCAs and speaker wires? Thanks in advance!