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Technical '50's gm power window help please

Discussion in 'Traditional Customs' started by SweetBaby, Oct 15, 2019.

  1. SweetBaby
    Joined: Sep 6, 2019
    Posts: 15

    SweetBaby

    wifes 56 Coupe Deville.....windows worked when i began the rebuild so tracks and motors are good...they did have intermittent problems which i figgr'd was a poor ground or connection but didnt look....i rewired the car and cut all the old crap out....i did leave the complete pigtail coming from the 4 way switch thru the door to the kick panel......now i cant figure out how to rewire them and here's my basic questions....1. do the switch and the motor ground when bolted in? 2. there are only two wires going to the motor, what fires the motor up and down? 3. on the pigtail from the switch i cut, only the "down" wires are there, where are the "up" wires"?
     
  2. VANDENPLAS
    Joined: Dec 14, 2009
    Posts: 1,898

    VANDENPLAS
    Member

    The switch does both power and ground
    Up you get neg and positive on 2 pins
    Then down
    The neg and positive get reversed

    see your master switch a lot of times the switches are wired in series
    So if they are not all connected nothing works

    sounds like you need a wiring diagram
     
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  3. SweetBaby
    Joined: Sep 6, 2019
    Posts: 15

    SweetBaby

    yes...think i do....cause nothing works....i tried to make the motor at least work without the switch, nope, burnt my finger tho :)
     
  4. Crafty
    Joined: Jun 26, 2002
    Posts: 213

    Crafty
    Member
    from UK

    I think the motor looks something like this ?

    [​IMG]

    If so, they are the same as Buick/Olds and maybe Pontiac. I believe that the motor earths through the door, one wire for up, the other for down, certainly the ones I have on the bench here work that way.

    I believe that the mounting and gearing is the same as motors that Gm used through in to the 70s, so you should be able to take motors from a camaro/firebird/whatever and they will bolt in.
     
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  5. 24riverview
    Joined: Jan 13, 2008
    Posts: 799

    24riverview
    Member

    I believe Crafty is correct, you should be able to make it work by grounding the motor itself and applying power to one wire for up, the other for down. Don't ground either wire. GM did go to the switching method VANDENPLAS mentioned sometime later, 70's or 80's I think.
     
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  6. 24riverview
    Joined: Jan 13, 2008
    Posts: 799

    24riverview
    Member

    Best I can do is 1958, but should be real close.
     

    Attached Files:

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  7. Back when the earth was green I worked on a 57 Barritz that someone tried to get the windows to work, all the wiring was disconnected, I wish I had the internet back then. It turned out that most of the problems were the terminals and connector on the switches. Be careful with the master switch and the polarity of the wires.
     
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  8. SweetBaby
    Joined: Sep 6, 2019
    Posts: 15

    SweetBaby

    thanks for the comments and especially the diagram....mine is exactly like that.....what manual has that, i'm bettin it has some explanaation of flow and tips along w the rest of the diagram describing what the wires go to that come out of the door jam and conect to the master switch or circuit breaker....my 56 has zero factory wires or electricals.....it came out of a field and i redid it all
     

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