Yeah, I've got some alternator whine coming through my amp. I've got the power wire run along the drivers side of the car and the RCA cables (amp and speaker preamp for rear 6x8's) on the passenger side. I've got both run to a 1000 watt 4 ch Pyle amp (Nice enough, and I got it for practically nothing) pushing a Bazooka 10" sub. With just the sub inputs plugged in, there's no whine, but as soon as i plug the feed for the back speakers into the amps other channel, it whines like crazy. Although, at that point, if i pull the feed wires for the amp, the whine stops as well. So, either set can be plugged in without whine, but not both. Also, I've grounded my amp to the lower bolt that holds the power antenna in place. It was an unpainted surface, so i figured that'd work. I'm new this stuff, so any help would be appreciated. if there's any more info y'all need, let me know. Thanks.