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Telephone wire color (colour) codes

Discussion in 'Electronic Basics' started by Harialbth, Jul 21, 2003.

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  1. Harialbth

    Harialbth Guest


    I accidentally ripped my phone wire from the extension jack. There are
    four wires sticking out: Red, Green, Black and Yellow. I opened the
    jack and there are eight holes like this:
    . . . .
    . . . .

    Only the middle four holes have a metal plates inside. So I guess
    those are the ones that should be used. Ok, now that i think that's
    clear enough, my question: which color wire goes into which hole?

    To clear up any further confusion, let's call each hole by a number in
    this order:
    1 2 3 4
    5 6 7 8
    Any help would greatllyyyyy apreciated,
  2. Rich Webb

    Rich Webb Guest


    or visit Google...

  3. The key (pun intended) is to realize that the 8 pin jack is a superset
    of the 6 pin, 4 pin, and 2 pin jacks. That being said, the first pair
    is the red/green and they go in the center 2 holes (6&3 in your numbering
    system). The second pair is yellow/black and they go in the holes on
    either side of the first pair (2&7). If your phone only has one line and
    no lighted buttons, you'll really only need the red/green pair. If the
    phone in question is 20+ years old, you may find it only works with one
    order of each pair (e.g. red-green or green-red). However, virually all newer
    phones are insensitive to reversal of tip and ring.

    You'll likely need a tool to crimp the wires once you reinsert them in the
    old plug, although you can sometimes push the individual metal contacts down
    onto the wire using a flat blade screwdriver. If you can't reinsert the
    wires into the original plug, you can replace it with a 4 pin plug that will
    work with your existing 8 pin wall sockets.

    The details of Registered Jack (RJ) connections can be found by Google searches
    for terms like "registered jack". There you'll also learn that the pins are
    numbered left to right without regard to the row offset.

  4. Harialbth

    Harialbth Guest

    But do you have any idea in what order the holes are arranged. In your
    links it says that we must match the wire color with the hole color,
    in my jack none of the holes have any colors.
  5. Don Bruder

    Don Bruder Guest

    Give up on the old jack. Go to radio schlock, or whatever, and get
    yourself a new one. It's not like you're trying to buy a brick of
    gold... Although in all honesty, at rat-shack you might *THINK* you are
    from the price.

    A couple bucks will get you a new jack that you can wire *PROPERLY* -
    anything you do with the old one is going to be a cobble-job that I
    wouldn't trust any longer than neccessary to make a few phone calls to
    find out who has one in stock. Most (if not all) phone jacks that are
    less than 20 years old are connected to the wires with "insulation
    displacement" methods - the wire goes in the hole, something gets mashed
    down onto/into the wire through the insulation, and locks into place.
    They're designed to be single-use, and any attempt to "redo" them is
    pretty much wasted effort.
  6. its you

    its you Guest

    Don't quote me on this, as I don't particularily remember. I do know
    this, green and red are a pair, yellow and black are a pair, and by a
    pair i mean one line. For most houses w/ one line, green and red are
    used, although I don't remember the arrangement they're connected to
    the phone in. I guess look it up, sorry
  7. Harialbth

    Harialbth Guest

    Thanks a lot Michael, that's the reply i was looking for.
  8. Glad to be of help. As others said, you may need to replace the jack
    if the wires don't stay (or you get "static" on the line).

  9. Brian Oakley

    Brian Oakley Guest

    If you are putting a screw on type jack on the end of a phone extension, it
    might be just as easy to borrow a crimp tool and crimp a new rj connector on
    it. Only thing you need to make sure is that both connectors are oriented
    the same way when you crimp them on. As for your question about running a
    cable through the wall, yes it can be done, it depends on where you're
    running it to and how your ceiling/attic is designed and also how your walls
    are made. If you have attic space, you can sometimes drill a hole through
    the top plate of the wall and drop a cable down that way. I'm my house I
    don't have that luxury. Also to terminate the cable as it comes out of the
    wall, a snap in type of electrical box works well for this. Just cut out the
    shape of the box (turn it around and outline it as you hold it up on the
    wall where you want it and cut it out with a sheetrock saw) then pull the
    wire out of the wall, feed it through the top of the box, and push the box
    into the wall and making sure the "wings" are actually inside the wall,
    tighten the screw down in the back of the box until it is secure (not too
    tight or you will actually damage the sheet rock. Its not too hard to do if
    you know what parts you need.
    Brian Oakley

    "Jesus invited us not to a picnic, but to a pilgrimage; not to a frolic, but
    to a fight. He offered us, not an excursion, but an execution. Our Savior
    said that we would have to be ready to die to self, sin, and the
    orld." -Billy Graham
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