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[Random_Stranger]

It never really did that before, can anyone tell me what that means and how I can fix that? If I undo my seat belt, sometimes that breaks it but it comes right back, or if I lower or raise my window.... It's the craziest thing, but I hate hearing it when I accelerate thinking I got a supercharger or something. It's really annoying.

[96stgreendemon]

sorry but i beg to differ, it does not matter what side you run the wires on, weather it be the same side or the opposite side, i had the exacact same problem as you have, its called "alternater whine" dont correct my spelling, this is caused by a "ground loop" somewhere in your system, now there is a cheap way to fix this, i actually just installed mine today, the device you need to buy is called a "rca ground loop isolator" it goes into the back of your radio in the rca ports and is almost like an extension, now this comes with 2 little brown wires attached, you take these wires and hook them into your ground, make sure you unplug the wire harness first or you will fry your HU, but disconect the ground and put these 2 brown wires together with the stereo ground and then put them all into the factory ground for the stereo, let me know if you have any problems with this, i have an extra one that i accidently ordered and just let me now if you want it, i will let it go for 20 + shipping, PM me if you have any questions, and if you get it you can call and i will walk you through it, its really easy, hopes this helps

[solidxsnake]

sorry but i beg to differ, it does not matter what side you run the wires on, weather it be the same side or the opposite side, i had the exacact same problem as you have, its called "alternater whine" dont correct my spelling, this is caused by a "ground loop" somewhere in your system, now there is a cheap way to fix this, i actually just installed mine today, the device you need to buy is called a "rca ground loop isolator" it goes into the back of your radio in the rca ports and is almost like an extension, now this comes with 2 little brown wires attached, you take these wires and hook them into your ground, make sure you unplug the wire harness first or you will fry your HU, but disconect the ground and put these 2 brown wires together with the stereo ground and then put them all into the factory ground for the stereo, let me know if you have any problems with this, i have an extra one that i accidently ordered and just let me now if you want it, i will let it go for 20 + shipping, PM me if you have any questions, and if you get it you can call and i will walk you through it, its really easy, hopes this helps

While it may not be the problem in this case, it absolutely matters to run power and signal wires separately. There's quite a bit of power going through those wires, and it can easily distort or interfere with signal going to the speakers. It is true that it has little effect, but it sure doesn't help to run audio and power wires together. Most of the time it won't make any difference if everything is wired and grounded properly, but interference is definitely a real phenomenon.

OP, definitely check your grounds as well. It's the only thing I could really think of after separating signal wires from power.

This post has been edited by solidxsnake: Dec 10, 2009 - 8:12 PM

[richee3]

sorry but i beg to differ, it does not matter what side you run the wires on, weather it be the same side or the opposite side, i had the exacact same problem as you have, its called "alternater whine" dont correct my spelling, this is caused by a "ground loop" somewhere in your system, now there is a cheap way to fix this, i actually just installed mine today, the device you need to buy is called a "rca ground loop isolator" it goes into the back of your radio in the rca ports and is almost like an extension, now this comes with 2 little brown wires attached, you take these wires and hook them into your ground, make sure you unplug the wire harness first or you will fry your HU, but disconect the ground and put these 2 brown wires together with the stereo ground and then put them all into the factory ground for the stereo, let me know if you have any problems with this, i have an extra one that i accidently ordered and just let me now if you want it, i will let it go for 20 + shipping, PM me if you have any questions, and if you get it you can call and i will walk you through it, its really easy, hopes this helps

While it may not be the problem in this case, it absolutely matters to run power and signal wires separately. There's quite a bit of power going through those wires, and it can easily distort or interfere with signal going to the speakers. It is true that it has little effect, but it sure doesn't help to run audio and power wires together. Most of the time it won't make any difference if everything is wired and grounded properly, but interference is definitely a real phenomenon.

OP, definitely check your grounds as well. It's the only thing I could really think of after separating signal wires from power.

^^ That's more what I meant, rather than it matters exactly which side of the car the RCA cable is on. Random_Stranger has his power wire on the driver's side, so the RCA cable needs to be on the passenger side. Sorry for the misunderstanding.

The fact that the whine gets louder as the motor is revved tells me it has nothing to do with grounds. Maybe the grounds could be better, but as the RPM's of the engine increase, the alternator puts out more power, more power gets sent through the power wire for the amp, the whine gets higher pitched. I'm not saying the grounds AREN'T to blame, but the RCA cable being too close to the power wire is the most likely suspect here.

[gt_driFFter]

The fact that the whine gets louder as the motor is revved tells me it has nothing to do with grounds.

Alternator whine is almost always caused by a GROUND loop.