3 wire alternator wiring - Page 3
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  1. #21
    Rods 'n' Sods Junkie robwizard's Avatar
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    Ok, that's great and really helpful! But just a few more questions because, quite frankly, electricity is like witchcraft to me!

    I have been and got a multimeter which I'm hoping is gonna make this a bit easier.. I know which one is B+ so that one goes to the battery/starter, the wire is pretty thick, as thick as the one on my polo if not thicker and the alternator puts out around the same power, 55amps. I intend to sort the wiring out properly at some point so for now that will hopefully be OK.

    How can I find out which connection on the alternator is the excite/field terminal? I don't have a diagram and nor can I find one..

    Seriously thanks for the replies, I'm really struggling with this haha

    Cheers

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  3. #22
    Official RnS Addict brading's Avatar
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    Any chance of posting up a picture of the back of the alternator. If you cannot post it on here PM me and I will give you my Email address and you can send it direct to me.
    Cheers brading
    Last edited by brading; 21-03-2013 at 21:02.

  4. #23
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    [QUOTE=robwizard;709751]Bring this back to the top because I too am struggling with a similar issue..

    I am trying to put an alternator in my Amazon and struggling.. I have got past the space issue and made some brackets to give it a bash but now I need to wire it and I am an idiot when it comes to this sort of thing.

    My alternator is a Lucas unit, the part number is LRA346 and it has the following terminals on it that I can see..

    W, which sticks out like a pin/socket
    B+ which is another sticky out one
    AUX which is a single blade
    IND++ which is another single blade..

    Any suggestions?

    Cheers[/QUOTE

    Is it like this one.


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  6. #24
    Official RnS Addict brading's Avatar
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    robo1 On the imageshack alternator take a 120/03 wire from the B+ terminal to the battery or to the terminal on the starter motor that the battery feed wire goes to and a 14/03 wire from the D+ terminal to one side of the warning light and a 14/03 wire from the other terminal on the warning light to the ignition switch terminal that becomes live when the ignition is turned on.

  7. #25
    Rods 'n' Sods Junkie robwizard's Avatar
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    http://s16.postimage.org/9bp6ji7qt/I...312_172937.jpg

    This is my one, sorry for the **** picture.. I don't have a camera so I have to point my webcam on my tablet at stuff haha

  8. #26
    Rods 'n' Sods Junkie robwizard's Avatar
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    Here we go.. still **** but maybe better? It's on the car now so a bit of a blag to take good pictures of the back of it..


    photo sharing

  9. #27
    Official RnS Addict brading's Avatar
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    The warning light connects to the ind. What confused it a bit was in your in your first post you put Ind ++. Connect up the B+ and the with your multimeter on DC Voltage around 20v check your battery voltage and then with the multimeter check between the battery earth terminal and the ind terminal and the voltages should be about the same. Once all the wiring is connected and with the engine off check the battery voltage with your meter. Then start the engine and check it again and it should have gone up to somewhere around 13 / 14 volts.

  10. #28
    Rods 'n' Sods Junkie robwizard's Avatar
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    Awesome! Thanks man! I will give it a blast tomorrow morning and see what's going down!

    Cheers

  11. #29
    Rods 'n' Sods Junkie robwizard's Avatar
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    So I wired my alternator up today.. No significant problems other than a couple of sparks where one of the wire struck the exhaust manifold but doesn't seem to have done any harm? unless it has.. which would suck.. but anyway yeah I put a battery in and fired it up, all went well the alternator is spinning merrily away, I checked the voltage and with the engine on or off it was 12v both times.. so I'm guessing something isn't right? I connected the thick black cable to B+ and the skinny red cable to IND.. I wonder what could be wrong? I can't tell if their are any problems really.. I will try running he battery down maybe by leaving the car running tomorrow for a bit with the lights on and see what happens?

  12. #30
    I'm Not Jed Clampett stueeee's Avatar
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    Does your ignition warning light come on when you turn on the ignition?
    Stuart.
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