poorboy alternator mod wiring problem - Steve Saunders Goldwing Forums

 
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post #1 of 9 (permalink) Old 03-30-2007, 04:45 PM Thread Starter
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I would appreciate any help that you guys can give. I purchased the alternator last winter and never checked the box. It doesn't come with any wiring instructions. It has 4 take off leads but I don't know how to wire it up.
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post #2 of 9 (permalink) Old 03-30-2007, 04:47 PM
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4 leads ? what make is that? Usually only 2 or 3 One is probably ground; one is for the exciter voltage in and the main heavy duty one goes to battery. ould meter them out or google the mfg
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post #3 of 9 (permalink) Old 03-30-2007, 09:34 PM
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Sounds like one I just pulled from an old Tercel, also has four wires but a decal on it claims built in regulator. Can't help ya with the wiring tho, I just junked the car and figured to keep the alternator as a nice backup for a poor boy mod some day as its nice and small

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post #4 of 9 (permalink) Old 03-30-2007, 10:13 PM
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The extra wire might be for the idiot light. Also some manufacturers use the alternator ac as a tach signal but not many so I doubt that. Got a picture or type of alternator?

Mike

Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.
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post #5 of 9 (permalink) Old 03-31-2007, 05:37 AM Thread Starter
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The Alternator is installed already. I guess that it will have to come back off to identify the leads.



Thanks for your suggestions
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post #6 of 9 (permalink) Old 03-31-2007, 07:37 AM
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my idiot light is always on , what does that mean,
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post #7 of 9 (permalink) Old 03-31-2007, 07:50 AM
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beachbuddy0253 wrote:
Quote:
my idiot light is always on , what does that mean,
Aim it outward. You can use it as a proximity detector.






Rudy

“...and the rabid dog they gave me
wasn't too much fun”
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post #8 of 9 (permalink) Old 03-31-2007, 08:33 AM
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I use a Geo Metro alternator on my GL1100. It has one lead for the charging, which should be obvious on your alternator.

It also uses only one additional wire to active the exciter, which makes the alternator work. This is a small gauge wire, activated by the ignition switch. On the Geo alternator there are three spade fittings for it to go on. I don't recall which one it is, but a fast test of each spade fitting with the alternator spinning,and a volt meter across the batteryor ammeter in the circuit will tell you when you connected the right lead.

You might need to take your alternator off, and bring it to an automotive electrical shop, or a local garage, and have them test and identify which leads are used for what.

LD Hack
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post #9 of 9 (permalink) Old 03-31-2007, 08:35 AM
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classicscott,

If it is a Delco alternator, use the "L" terminal (usually yellow) only wired through the lamp back to the key on 12 volt source. Of course the the "big red" from the alternator post direct to the battery positive through a fuse. The other 3 leads on the connector are not used.

Thanks,
Bob
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