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  1. #1
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    Do I need a stereo harness adapter

    Hi all, I have a 1.9 TDi sport avant, I have just brought a second hand Sony headset http://reviews.halfords.com/4028/151525/reviews.htm from a lad at work, the question is will this fit straight in or will I need to buy the wiring adapters because I've got to go to Halford anyway to get the stereo removal keys

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  3. #2
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    Re: Do I need a stereo harness adapter

    Ok so I fitted it but the original wiring as three plugs one for live, earth etc, one for front speakers and another for the rear but the new stereo only has two plugs so do I need some kind of adapter?

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    You should have two 8-Pin ISO plugs, one for power and the other for speaker, and these should plug straight into an aftermarket stereo.

    If there is a third plug that is different, I would guess its for a changer, or something like that.

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    Re: Do I need a stereo harness adapter

    I think the third plug is for the rear speakers because at the moment I don't have any audio coming from the rear when I set the fade to the rear
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    Re: Do I need a stereo harness adapter

    I also have this mystery plug in removed from the stock radio
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    The first pic apears to be a 'Mini ISO' used as a line out for feeding an amp, like on cars with Bose.

    They are normally in three bits that pull apart, yellow, green and blue... one bit for changer, one for phone, and one for line out, but looks like its all in one, but only one end is used.

    Second pic shows the two 'ISO' plugs, the black one is the power, and the brown one is for the speakers... but on the speaker one only 4 of the 8 pins are used, so you are correct only the fronts are fed direct from the stereo.

    I would guess there is a factory fitted amp in the back of the car, in my Saloon with Bose it is on top of the drivers side rear wheel arch.

    Third pic looks like a 'Fakra' which is normally used for aerials, or GPS, etc... is there a more normal aerial type plug there aswell? If so it could just be left from some phone prep kit that has been in there in the past.

    I dont really know what your options are, such as if you can feed the amp using the line out on the back of a normal radio, never tried to do it, but someone must know.

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    Re: Do I need a stereo harness adapter

    Yeah you need a harness mate for rear amped speakers can be bought from Halfords it clips into your remaining plug
    Also if you like send me your num and ill send a pic and you can post it up if you like as it may also help others. I dont know how to post pics lol.
    Last edited by dale86; 19th February 2013 at 10:59.

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    Re: Do I need a stereo harness adapter

    Quote Originally Posted by dale86 View Post
    Yeah you need a harness mate for rear amped speakers can be bought from Halfords it clips into your remaining plug
    Also if you like send me your num and ill send a pic and you can post it up if you like as it may also help others. I dont know how to post pics lol.
    Sent you a PM with my email if you want to email that picture over.

    There is a standard aerial plug but I need an adapter to make it fit the stereo.

    Also I do have a parrot hands free fitted which was plugged into the standard stereo, can this be wired to the new stereo?

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    Re: Do I need a stereo harness adapter

    Im not sure on the parrot as ive never fitted one but im more tjan certain it can be done and you will need an aerial adaptor female to male can be purchased also from halfords and email is on the way hope it helps.

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    Re: Do I need a stereo harness adapter


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    Re: Do I need a stereo harness adapter

    I cnt tell from that pic mate all i can tell you is it about the same price as the one I purchased lol best to go in store an compare to the pic i sent you shud be right as long as has the sepperate plug for you rear amped speakers

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    Also I do have a parrot hands free fitted which was plugged into the standard stereo, can this be wired to the new stereo?
    The Parrot should just plug in between those two 8-Pin ISO plugs and the new stereo.

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    Re: Do I need a stereo harness adapter

    Quote Originally Posted by Enzo_UK View Post
    The Parrot should just plug in between those two 8-Pin ISO plugs and the new stereo.
    Sorry mate, can you be more specific

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    Re: Do I need a stereo harness adapter

    Quote Originally Posted by dale86 View Post
    I cnt tell from that pic mate all i can tell you is it about the same price as the one I purchased lol best to go in store an compare to the pic i sent you shud be right as long as has the sepperate plug for you rear amped speakers
    Have u sent the pic, I haven't received it yet

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    The mystery plug you have shown is a seperate Fakra aerial feed which you wont be using with the new radio. You can just leave it tucked out of the way. Your new radio will only need the standard aerial wire fitting ,although you will need an aerial adapter to power the booster or you'll get no reception.

    With regards to the other connections, the power and the front speakers will go directly into the back of your new radio.The rear speakers will probably need an adapter to connect either to the rear rca output on the radio or to the speaker output through a line converter. Finally there's no accessory wire on the existing car wiring so you'll need to either link the permenant live to the accessory live on the radio , or wire in a relay using a switched 12v feed from the igniton key .

    Did mine a couple of months ago , although mine was Bose so I didn't have the iso plug for the front speakers. Also not sure on wiring the Parrot but it sounds like it should just work through the front speakers anyway.
    2004 A4 Sport Cabriolet 3.0

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    Re: Do I need a stereo harness adapter

    Or is this the lead in need

    http://www.halfords.com/webapp/wcs/s...5876&langId=-1

    Does anyone have a pic of the lead in need as I don't want to pick the wrong one up

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    Re: Do I need a stereo harness adapter

    Yeah ive emailed you 2 pics mate ill try again now and check sent to roght address
    That isnt the lead i have i think thats for newer a4.

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    Re: Do I need a stereo harness adapter

    Quote Originally Posted by dale86 View Post
    Yeah ive emailed you 2 pics mate ill try again now and check sent to roght address
    That isnt the lead i have i think thats for newer a4.
    Still not received mate, have a check

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    Just found this Autoleads : Aerial Adaptor for AUDI A4 (2004-2008) Quadlock System-Half Amp - would it be best to conect using the faktra or just buy a adapter for the other Ariel lead

    Ok im looking on Car Audio Systems, Car Stereo, Car Radio DAB Stereos, Car Speakers Amplifiers Head Unit for a wiring harness, is my car half amplified ?
    Last edited by Red_Stafford; 19th February 2013 at 21:50.

  21. #20
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    No thats the lead for a B7, you will not need to connect anything to the Fakra plug. Your car will have 2 aerials , 1 is a standard co axial type and the other is a Fakra type. Aftermarket radios can't use both so you only need an adapter for the co-ax plug. Here's a link to what I think you will need.

    In Car Entertainment, Bluetooth & Multimedia fitting solutions and interfaces
    2004 A4 Sport Cabriolet 3.0

 

 

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