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TECH: GM turn signal wire colors

Discussion in 'The Hokey Ass Message Board' started by squirrel, Aug 4, 2006.

  1. squirrel
    Joined: Sep 23, 2004
    Posts: 55,942

    squirrel
    Member

    this seems to pop up occasionally, someone needs to wire a later GM column into an earlier GM car, or vise-versa....and GM changed the color codes some time in the early 60s. Old is the 50s and early 60s color code, Function is what the wire does, New is the mid60s- and newer color code. Some of the columns have all black wires with a color stripe, so for these the New color is the color of the stripe on the black wire.

    Old----------function----------New

    pink---------left rear----------yellow
    purple-------right rear-------dark green
    light blue----left front--------light blue
    dark blue----rightfront-------dark blue
    white------brake switch-------white
    yellow---power from flasher----purple
     
  2. Hellfish
    Joined: Jun 19, 2002
    Posts: 6,626

    Hellfish
    Member

  3. burger
    Joined: Sep 19, 2002
    Posts: 2,372

    burger
    Member

    haha, i wish you'd posted this earlier. i nearly drove myself nuts figuring this out with a multimeter on the '57 column i put into my truck.
     
  4. 53sled
    Joined: Jul 5, 2005
    Posts: 5,817

    53sled
    Member
    from KCMO

    i think i copied these from another one of your posts, but they helped a bunch.
     

    Attached Files:


  5. Model A Vette
    Joined: Mar 8, 2002
    Posts: 1,075

    Model A Vette
    Member

    On the "new" side there would also be a black for the horn button to ground the horn relay to blow the horn.
     
  6. squirrel
    Joined: Sep 23, 2004
    Posts: 55,942

    squirrel
    Member

    yes, the horn switch wire is usually black on newer cars, but I left if off my list since I was talking about turn signal switch wires....I probably should have included it.

    on older column the horn switch wire is often tan.
     

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