2001 Mustang that came with MACH 460 sound system. (Before switching it all out)

Currently have:
Pioneer DEH-9600 (something like that)
1 Alpine Type R 10" Sub
Alpine Mono Amp(for Sub)
Rockford Fosgate Wiring.
Sony 4 channel Amp
4 Infinity Speakers & 2 Infinity tweeters (Reference)


So here's the Problem: (ONLY when my car is on)

When the car is on, there is a buzzing noise that doesn't correspond to raising the volume, speeding up or anything. It comes only from my left rear speaker. No music coming from it, just a buzzing noise.

After removing the rear enclosure, i saw that the speakers are connected to the harness the stock enclosure came with, then connected to another stock harness that used to be used for the mach 460 speakers that runs from within the car. I used the wire/harness that comes from within the car (right side) & connected it to the left speaker & worked perfect. I then tried the left harness/wire coming from within the car and connected it to the right speaker and nothing. So i can say that the speakers are working fine.

Now i don't know what it could be. Maybe a Burned out wire? burned out channel within my 4 channel amp?

Please Help. It's been annoying the heck out of me for a while now.

REMEMBER: It only does this buzzing noise when the car is on, i didnt check if music comes out when the car is on.


I'm New to this site so If you have any suggestions Please E-mail me... I would REALLY, REALLY appreciate it.  

When you say it only does it when the car is on, you mean only when the engine is running?  If not then most likely there is a bad RCA wire or channel in the amplifier.  If it is only when the car is running and it's fine when the key is in ACC then there's a wire or something too close to some electronic equipment in the car or the RCA wire may be pinched somewhere and the resulting ground is causing a noise loop.  I'd be glad to help you try to figure this out, so let's start at the beginning, is this happening only when the car is running or not??  

I currently have a Honda Accord, I was in an accident so the right side of my door was replaced. Ever since then I have been unable to get any music out of that side of my car.

To make things worse, every time the passenger door opens, there is a loud buzzing noise that doesn't go away until the door is closed.

Please help me!!!  

when they replaced the they probally smashed the speaker wire together or something is touching them  

take the door panel off and unhook the speaker and ohm the speaker wire for continuity but you will need an ohm meter