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  1. #1
    Soaring like a chicken prefect's Avatar
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    Default Alternator question

    I have a spare powerfull Japanese alternator (Denso)with 4 wires/connections. I want to fit it to my van which has a Lucas alternator with 2 wires, 1 to battery 1 to idiot light through ignition switch


    On the Denso one big terminal is connected to battery with a nut on pretty happy with that one

    Other three small connections I am not sure on
    I guess one would be for a warning light, another for a voltage sense line but I cant work out what the 3 rd would be.
    I cut the wires after the plug are the colours to an industry standard or do the car makers use colours willy nilly?
    Although I scored the alternator from an abandoned vehicle (cant remember make or model) I dont want to smoke it by hooking up the wrong wires.
    Thanks for any help
    Last edited by prefect; 15-09-2008 at 11:19 AM. Reason: '

  2. #2
    Superanuitant Poppa John's Avatar
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    Default Re: Alternator question

    Google...Denso Alternator Wiring Diagram...has pictures. PJ
    Deafness.
    When I was younger I heard but didn't listen.
    Now I am older, I listen but cannot hear.

    If it is not broke, don't make it broker by trying to make it better. (This applies specifically to PJ)

  3. #3
    Smiling Down On Youse SurferJoe46's Avatar
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    Default Re: Alternator question

    Some of the very early alternators used a 4-wire connection...they are quite obsolete, but they worked then and can be used again.

    There is usually the BATT+, F or Field, S or Stator and I or Indicator for the light.

    Here's some isometrics for you:

    1) http://www.rowand.net/Shop/Tech/imag...o1972Buick.jpg

    2) http://www.instructables.com/files/d...WO3.MEDIUM.gif

    3) http://img487.imageshack.us/img487/2...twiring4ty.jpg
    Last edited by SurferJoe46; 15-09-2008 at 04:24 PM.


    Warum werden wir so früh alt und klug so spät?

  4. #4
    Soaring like a chicken prefect's Avatar
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    Default Re: Alternator question

    Quote Originally Posted by SurferJoe46 View Post
    Some of the very early alternators used a 4-wire connection...they are quite obsolete, but they worked then and can be used again.

    There is usually the BATT+, F or Field, S or Stator and I or Indicator for the light.

    Here's some isometrics for you:

    1) http://www.rowand.net/Shop/Tech/imag...o1972Buick.jpg

    2) http://www.instructables.com/files/d...WO3.MEDIUM.gif

    3) http://img487.imageshack.us/img487/2...twiring4ty.jpg
    But thats only 3 wires

  5. #5
    Smiling Down On Youse SurferJoe46's Avatar
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    Default Re: Alternator question

    All of those diagrams have at least one 4-wire unit................

    The ND typical is the last one...I just sent the others to confuse you a little...not really...but they show the redundancy of circuits, that's all.


    Warum werden wir so früh alt und klug so spät?

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