12v lead plug change

Discussion in 'Motorhome Chat' started by markymark, Jun 30, 2009.

  1. markymark

    markymark Read Only Funster

    Joined:
    Mar 21, 2009
    Messages:
    240
    Likes Received:
    6
    Location:
    Sierra Leone /Southampton
    Evening.:thumb:

    i am trying to make a 12v lead to use for my telly.
    All i need to do is put a caravan plug on the end.
    As you can see from photo i have stripped back the wire to reveal a white sleeve covered with more wire around the outside.I have unwrapped it to expose the white sleeve
    Is the white sleeve the Live and the wrapped around stuff the neautral
     
  2. jools

    jools Read Only Funster

    Joined:
    Jul 30, 2008
    Messages:
    12
    Likes Received:
    0
    You are correct to be cautious as there are different polarity plugs out there,,,,,, you should be able to find a small icon near the socket on your tv to tell you the polarity
     
  3. American Dream

    American Dream Read Only Funster

    Joined:
    Aug 20, 2007
    Messages:
    6,489
    Likes Received:
    154
    Location:
    Lincoln
    Buy a cheap multimeter and trace out the wiring .

    Then follow Jools' advice.Check the device for a label/moulding showing the polarity.:thumb:
     
  4. The Wild Ones

    The Wild Ones Read Only Funster

    Joined:
    Jan 4, 2009
    Messages:
    76
    Likes Received:
    0
    Location:
    Oxfordshire
    The `normal' convention with this type of cable is centre or sleeved conductor positive and exposed or `screened' one negative. But it is good advice as has been mentioned to double check with a meter or continuity tester, to factor in any `sods law' scenario.
     
  5. markymark

    markymark Read Only Funster

    Joined:
    Mar 21, 2009
    Messages:
    240
    Likes Received:
    6
    Location:
    Sierra Leone /Southampton
    Thankyou all for your advise,

    I dont know anything about polarity, is that the way in which the wires go?

    The wire i used came straight off a 240v to 12v transformer, the end i am using is the bit after current has been transformed to 12v.

    The caravan plug has markings for live on one terminal and the other has neautral and a w on it
     
    Last edited: Jun 30, 2009
  6. sinbad1

    sinbad1 Deleted User

    yes this is so, get this wrong and its goobye tv your tv imput should show wether it is + center pin (more likely) or negative.just have a look where it plugs in

    View attachment 2603

    if you were lucky? you would also need a inline fuse for safety, also some lcd's don't have the tolerence of a varying voltage you get in motorhomes.

    I would suggest one of these [ame="http://www.amazon.co.uk/Amperor-LCD-Volt-Stabiliser-Regulator/dp/B000ZLRXG8/ref=sr_1_1?ie=UTF8&s=electronics&qid=1246359592&sr=1-1"]Click here[/ame]

    Regards
     
    Last edited by a moderator: Jun 30, 2009
  7. markymark

    markymark Read Only Funster

    Joined:
    Mar 21, 2009
    Messages:
    240
    Likes Received:
    6
    Location:
    Sierra Leone /Southampton
    Many thanks Sinbad will have a look:thumb:
     
  8. markymark

    markymark Read Only Funster

    Joined:
    Mar 21, 2009
    Messages:
    240
    Likes Received:
    6
    Location:
    Sierra Leone /Southampton
    Lead all together and tested. Tv working fine but will still get one of those 12v regulator things.

    Once again problem sloved by the help of you guys.

    Many thanks

    Mark
     
Loading...

Share This Page