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Thread: Siren Battery Replacment

  
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    Enigma ???'s Avatar
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    Siren Battery Replacment

    I had some time to kill so thought i would replace the backup batteries on the OE siren,As you know the Bosch piece of junk isn't designed to be opened as it is ultrasonic sealed, Take out the Siren as in the Remove power sounder how to. Your going to need a dremel or similar cutter



    Two Varta Ni-MH 3/V150H, 3.6v batteries @ 140mAH, try ebay for the batteries



    LED legs 8 in total, some gloves, A soldering Iron and solder



    Amalgamating Tape, Some primer



    and some sealer




    Cut round the seal of the siren with the dremel





    Now it's in two half's separate the two half's taking care not to bend the pins on the back and then unplug the module from the siren and then release the module that is held in by four plastic clips



    As you can see the siren battery has gone




    My battery didn't come with any pins



    as it would of been a pain to bend or move pins fitted to the battery as their is no direct fit battery for the siren.

    So i tinned the ends of both batteries taking not to heat them up too much, i did one side and the went to the next battery to allow it to cool down before doing the other side



    Remove the batteries i just clipped the terminals as i couldn't find my desoldering tool,you can see where the acid has started to burn the board



    Take care when soldering the pins and batteries to the board as the cooper on the board is starting to get exposed and could short out the batteries if the pins conduct on the copper




    The batteries are really close and with the solder on the battery it could touch so i used amalgamating tape only on one of the batteries as that was all that was needed





    with both batteries fitted you are nearly ready to rock n roll




    Make sure the pins bottoms are soldered properly after you soldered it onto the battery,just apply some heat and some solder to the bottom of the pins And make sure the solder has not bridged a circuit on the chip part of the board





    Clip the circuit board back and replug the siren




    Now just put the two half's together



    just to test it on the car, Mine chirped when i fitted it, arm the alarm with the window down and give it 40 seconds to arm, set it off by waving your hand inside the car the siren and the horn should sound then press the disarm button,now unplug the siren it should sound in an audible alarm,plug it back in and turn on the ignition now you can remove it from the car.

    Prime both half's of the siren Make sure the excess primer is removed




    Make sure you seal it with something strong i'm using windscreen bond don't skimp on the sealer



    allow 24 hours to dry and then refit to the car and test. HTH

    BY Enigma???

    The Author takes no responsibility for damage caused to vehicle as a result of following this guide.
    You Might Be Able To Piss Over Me But I'm Not Going To Roll Over And Lick My Lips While You Do It

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    lee gsi's Avatar
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    Nice HOW2 but do you know your pictures dont work.
    The truth is always the truth even if you haven't realised it yet...

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    Their working for me so i don't know what is happening
    You Might Be Able To Piss Over Me But I'm Not Going To Roll Over And Lick My Lips While You Do It

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    pictures working for me.
    fishing, bikes, golf & soapy t*t w**ks - what more can a man need

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    Not workiing here either.

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    pictures are working for me

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    Probably pop-up blocker that's active - disable it - or if it's possible with your pop-up blocker set aoc in the "white" list (or allow list).

  8. #8
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    Second thoughts they do work for me if I click on them. I was just to lazt to click on them before

    White is the new Black

    FARMYARD TUNING

    LEH IS THE FUTURE

  9. #9
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    Yeah they work ok if I click them but it opens them up in another window.
    The truth is always the truth even if you haven't realised it yet...

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    fishing, bikes, golf & soapy t*t w**ks - what more can a man need

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