Hard Wiring Composite Cable to Cig Lighter

Discussion in 'iPhone Accessories' started by fiveoh, Aug 23, 2010.

  1. fiveoh macrumors newbie

    Aug 23, 2010
    Has anyone hard wired the apple composite cable to a cig lighter? I'm using the cable on the rear rca inputs for my radio and would like the phone to charge while its plugged in. I dont want to have anything plugged into my cig lighter and wanted to keep it out of sight.

    Is there anyway to do this? I know the iphone charges at 5v and the lighter is probably 12v so im not sure if it will work.
  2. Cynikal.Mindset macrumors 6502a

    Jul 6, 2010
    Guelph ON, Canada
    buy a cig lighter to usb adapter and hard wire that behind the dash and call it a day...$5-10 for the adapter, some wire, electical tape/solder/butt connectors and done
  3. ItsJustafnPhone macrumors 6502a

    Jul 26, 2010
    It will NOT work

    12 volts will fry your iphone

    Ive done what you did but ran it from directly from the battery so my phone could charge with my car completely off

    But it sounds like you don't have experience to do this, so i take no responsibility for any damage caused by running live wires

    Positive battery terminal ---> wire----> through firewall ---> 2 amp fuse ---> extra ciggarete lighter ---> 5V car charger in the extra cigarette lighter ----> apple usb cable plugged in

    For the negative side of the cigarette lighter just ground the wire on any metal part of your frame

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