As I recall Tony you have a recent accord as do I. In my install there is absolutely no alternator whine or noticable hiss whatsoever. I ran my power down the drivers floor trim, and the RCAs, amp remote, and speaker connects down the center console. They are basically right on top of each other once they get to the back seat as they go to the amps. The old "power and gnd separation" is a myth as all of the amplifier currents travel through the car chassis back to the batt/alt anyways. I would suggest you have some issue with your install if you're having a noise problem.

#080000512 green 12GB