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always on stereo unit

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by tismehi, Dec 28, 2012.

  1. tismehi

    tismehi Active Member

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    I have a '99 e300d and I have just fitted a new jvc stereo unit with bluetooth, front usb and aux in.
    I would like for it to be able to be powered on at all times - ie, without the key.

    is it a matter of joining the permanement live wire to the one which powers up when I turn the key?

    or is there another way to do it? maybe through the fusebox?
     
  2. cleverdicky

    cleverdicky Senior Member

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    Yes that would work. But you risk draining your battery.
    Make sure you have a fused supply.
     
  3. television

    television Always remembered RIP

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    As cleverdicky with inline fuse so just join both 12v plus together
     
  4. M80

    M80 Senior Member

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    In your case I would consider linking the 2 feeds by an override switch. Off- normal, on- unit on while ignition off.
    A bit of clever wiring through a relay could drop the relay and link whenever the ignition switch is turned preventing a flat battery you forgot.
     
  5. OP
    tismehi

    tismehi Active Member

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    thanks guys,

    your advice was a help.

    i connected the unit by cutting the yellow ign feed yellow wire and joined it to the permanent live red wire.

    i fitted an inline fuse at this point and it works exactly as i wanted it to.

    cheers again.
     

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