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Thread: Vauxhall Wiring loom and Lost Presets

  1. #1
    Newbie keegan's Avatar
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    Vauxhall Wiring loom and Lost Presets

    I have a Sony CDX 4000r in my Vauxhall Corsa and everytime I switch off the ignition I lose all my radio presets, clock resets etc. I have been told that this is a problem caused by the way vauxhall wire power to the ISO socket and that it is possible to work around.

    Does anyone know about this problem and could you advise me if you do, its driving me nuts at the minute!


    TIA
    Keegan
    Project Neville: "The Brain"
    MP3/GPS

  2. #2
    Tainted Love Cris's Avatar
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    How is it wired? There are two power wires to your HU. One provides constant power to the HU so you don't lose your settings, and the other one is the main power.

  3. #3
    Constant Bitrate
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    I've had the same problems. You have to switch red and yellow cable if i'm correct. (backup power and memory-power).

    (I have a Opel (european brand name of Vauxhall) Astra myself, but its internally almost equal to a Corsa)

    Quote from another forum
    You mean the radio lost it's memory during power off?

    If so, that's because all Opel/Vauxhall have this SUPERWIRED issue of ignition/perm live being switched.

    Right now, probably the radio has perm live on both connectors. If you restore it the way it was before, and switch the red wire with the black wire, it should work perfectly.

    On the radio wires should be like this: red - ingnition and yellow - perm live.

  4. #4
    Newbie keegan's Avatar
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    Cheers, I'll look into it. At the minute I am using a halfords iso adapter thing which is easy enough to rewire.

    Thanks for your help
    Project Neville: "The Brain"
    MP3/GPS

  5. #5
    Constant Bitrate LeoTheHamster's Avatar
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    Quote Originally Posted by DJSmiley
    I've had the same problems. You have to switch red and yellow cable if i'm correct. (backup power and memory-power).

    (I have a Opel (european brand name of Vauxhall) Astra myself, but its internally almost equal to a Corsa)
    It's the same with a Vauxhall I have an Astra
    Leo

    http://www.talkaudio.co.uk

    A million people can't be wrong, right?

    Well... unless they're all from the red states...

  6. #6
    Newbie keegan's Avatar
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    A quick update, I have now got my head unit wired in properly.

    A little snag to start with, I wired the illimination wire into the ignition and the radio wouldn't work unless my lights were turned on!

    Cheers again
    Project Neville: "The Brain"
    MP3/GPS

  7. #7
    Constant Bitrate LeoTheHamster's Avatar
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    Quote Originally Posted by keegan
    A little snag to start with, I wired the illimination wire into the ignition and the radio wouldn't work unless my lights were turned on!
    Thats a new one Look at it this way, it's better to make a mistake, figure out what you've done and work out how to fix it then it is just to bodge it up and it works off blind luck

    Or thats what I think when it doesn't go quite right
    Leo

    http://www.talkaudio.co.uk

    A million people can't be wrong, right?

    Well... unless they're all from the red states...

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