Ignition light on 1 wire alternator !? - Page 2
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  1. #11
    I'm Not Jed Clampett stueeee's Avatar
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    Dec 2009
    Nr. Dartford, Kent
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    Quote Originally Posted by rockinrich01 View Post
    I've wired mine up and it works. You have a 12v switched supply to lamp, but don't ground lamp wire it to small spade terminal on alternator, And other small terimal goes to a 12v supply to monitor voltage for built in reg in alternator!

    Heres a link to a pretty picture...http://mightymo.org/public_html/imag...re/DelcoSI.jpg

    Cheers Rich
    Yep, that's a diagram for a Delco 10SI which is a three wire alternator, I've rebuilt several of those, I have one on my truck. Excellent piece of kit, but not a one wire alternator. One wire alternators conjure the field voltage up using a special type of internal regulator, so only need the Batt. connection.

    My experience of one wire alternators has been that they don't tend to charge until the motor is revved up a bit, so I wouldn't rush to fit one to one of my rides.
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  3. #12
    Stroker Kustom Jim's Avatar
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    Apr 2009
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    Thumbs upThanks for the replies!

    Been a canny learning curve on this stuff.

    Googled it as well and there's loads of info out there. One site said 1 wire alts still have the other terminals.

    I had a look at the 80amp Summit alt I got and blow me there's a rubber block which has the two other terminals hidden under it!?
    I will hook up the ign sense lite and see if that still functions.

    Think I've got all the info I need for a stab at it.


    Stueee, you got some great tech tips on your website too!


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