Windscreen power causing this buzz problem!?!? Ugh
 

So i have upgraded my audio system in my car. It sounds great, during the day. But once the head lights come on (or if I turn them on) the front channel will buzz. Lights off, no problem. Only front, not rear channel.

The only other thing I can think is causing the buzz is my wind screen power wire. But that's burried by the seat cushion, far enough I believe from any speaker wire, but maybe I'm wrong? It does run along the door kick plate.

So would this cause the noise? I would think the same audio output for both front and rear go that way to the amp / sub thump harness now in the rear. If I can't fix it, I think I'm just going to get a Y RCA splitter for each L & R and use the rear output on both. I can create the fade with the amp I guess.