USB charger

Discussion in 'Tech/Mech General' started by Figaro, Sep 19, 2015.

  1. Figaro

    Figaro Funster

    Joined:
    Feb 22, 2011
    Messages:
    837
    Likes Received:
    673
    Location:
    Newcastle under Lyme Staffordshire
    I was feeling very pleased with myself after changing the 12v auxilary socket on my 2003 Ducato for a twin USB charger socket, I even fitted an on / off switch as there is an led on the socket which is quite bright and being always on was a problem.
    All was well until I turned on the side lights on a recent trip and the socket turned off. Side lights turned off, socket back on !
    I seem to recall that when fitting it there was an additional wire that I didn`t seem to need, this may have been for a small light on the side of the old socket. So I taped it up but maybe I should have connected it instead.
    Anyone know where I went wrong ?
    TIA
     

    Attached Files:

  2. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,450
    Likes Received:
    16,882
    Location:
    YO11 2BD
    I assume you used the centre wire and the earth wire off the main lighter socket body.
    The extra wire is for a light which COMES ON when the lights are turned on.
    The main wires should have nothing to do with the side lights or any other lights.
    Theres a slight possibilty if you connect the stray wire to the pos wire it may backfeed the sidelight circuit so your sidelights will be on permanently.
    And if you only connect the stray wire to the usb socket pos terminal you only have usnb when the sidelights are on.
    I think you need to recheck just which wires you used.
     
    Last edited: Sep 19, 2015
  3. Figaro

    Figaro Funster

    Joined:
    Feb 22, 2011
    Messages:
    837
    Likes Received:
    673
    Location:
    Newcastle under Lyme Staffordshire
    Thanks, I`ll have another look tomorrow
     
  4. mitzimad

    mitzimad Funster

    Joined:
    Jan 28, 2008
    Messages:
    2,962
    Likes Received:
    3,300
    Location:
    walthamstow east london
    sounds like you have used the ilumination feed as your main feed and taped up the main feed
     
  5. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,450
    Likes Received:
    16,882
    Location:
    YO11 2BD
    My first thought also.....except the usb charger turns off when the lights are turned on.
    Should only work with lights on if that was the case.
     
  6. Figaro

    Figaro Funster

    Joined:
    Feb 22, 2011
    Messages:
    837
    Likes Received:
    673
    Location:
    Newcastle under Lyme Staffordshire
    All sorted now. I replaced the negative to usb with the negative I had taped up unused, and all works correctly, lights either on or off.

    PS ..... everything else seems to still work correctly as well (y)
     
  7. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,450
    Likes Received:
    16,882
    Location:
    YO11 2BD
    Must be negative switched light circuit then.
    Im surprised.
     
  8. tonyidle

    tonyidle Funster

    Joined:
    Aug 6, 2013
    Messages:
    2,867
    Likes Received:
    2,685
    Location:
    Kendal, Cumbria
    Sounds like the sidelight wire was used as the earth for the charger - sidelight circuit would provide a half-decent earth until the sidelights were switched on when it would be at 12v. The 'spare' wire was the real earth.
     
    • Like Like x 2
  9. DP_JAY

    DP_JAY Funster Life Member

    Joined:
    Mar 17, 2010
    Messages:
    1,797
    Likes Received:
    1,022
    Location:
    Cark, Cumbria
    Sounds much more like it
     
Loading...

Share This Page