I fitted my speakers and amp the other day and it was fine, but yesterday i decided to sort them out so they looked neat instead of it all over my boot and screwed the amp to the rear bench. Now i have developed a whirring noise when engine is on and reving, what i want to know is what wires are too close together to cause this? Down the right side i've run the Phono lead and right speaker wire, on the left i've run the power lead, remote lead and left speaker wire, cheers.

i think its cos the remote lead and the power lead are running down the same side!

nah, my remote and power are down the same side, tho iv made sure that my power wires and speaker wire run down opposite sides, helps stop interference

the noise mean you have a poor earth

Phil's right, check your earth.

yeah this means a poor earth happened to me a while back, maybe run a new earth for the radio?

Mark

also try to keep the wiring away from the inspection hatch above the tank as it could be picking up interfereance from the fuel pump

I don't think its the fuel pump as it's not an electric one i don't think, i'm not sure about if it's the earth because before i tidied my boot up it was connected to the same earth and it worked fine. Where is the earth that most people use? is it the seatbelt area?, how do you get to it?. the noise that i get through the speakers is when i change tracks i can hear it, when i turn the ignition on there's a high whirring and when the engine is on and i rev you can hear it, Cheers.

i drill a hole in the box section jus be hind the rear seats and scratch all the paint off so the earth is direct on bare metal then use a self stpper to screw it down,

job done

i drill a hole in the box section jus be hind the rear seats and scratch all the paint off so the earth is direct on bare metal then use a self stpper to screw it down,

job done

box section?

why don't you use the grounding point where the boot light gets it's earth? you'll see the threaded bolt coming out of the chassis behind the passenger rear light.

The box section i think he means is the part between the rear seats and the boot area...Where the seat belts bolt into.

wudn't a alternator suppressor stop it?

noise is made by the alternator developing interference, i thnk

why don't you use the grounding point where the boot light gets it's earth? you'll see the threaded bolt coming out of the chassis behind the passenger rear light.

The box section i think he means is the part between the rear seats and the boot area...Where the seat belts bolt into.

Thats the one i'm using at the moment, is it a good one? if it is then thats not the problem.

neils right!! link another battery as if you where going to jump your car, but make sure you dont make it 24v,, then start your car and play the radio, if it still makes the noise i dont have a clue but if it doesnt then you need a suppressor because your alternator isnt generating enough power to play your head unit and charge the battery at the same time

If you mean the right side the drivers side, then that's probably why. Mine does the same cause I've passed the phono lead just above where the pedals are, right beside the fusebox.

It means the phono's pick up all the interference from the pedal box (6n2 use driveby wire?). A suppressor on the phono lead would help..

I guess you could re-route all the cables down the left side, but it's bastard. :p

You only hear it at serious low volumes or changing tracks, and it's not even that bad then..

like people have said:

-check earth connection, mine has been known to be fine for ages in one place but then all of a sudden decides it doesnt like it. so move it or remove and replace making sure its making full contact with the metal

-the power cable should be run down one side of the car on its own, all other wiring down the opposite side of the car.

and if those fail then i cant help anymore!

hi mate had this problem in my 106 i tried everything new wires, amp,and speakers and found the problem remained.

which led me to believe it was my hu. a whining whistle noise occurs when the earth tracks for tor the rca outputs on your hu blow.

you could either send it away to be fixed

i found wrapping little hoops or bare speaker cable, round the output rca's making sure they was also in contact with the metal case of the hu.

doing this stopped the whining.

heres a quick pic to help understand

i just cut a few short lengths of of speaker cable

stripped them back

made them into small coils by wrapping them round a pencil

then pushed them over the rca out puts

hope this helps

As this thread has been ressurected from 2008 I'm pretty sure he may have solved it by now... lol

As this thread has been ressurected from 2008 I'm pretty sure he may have solved it by now... lol

Id love to think he's been sitting there in front of his pc for over 2 yrs awaiting a reply

never even noticed that lol