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Old 08-01-2006, 11:30 AM
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1 wire alternator hook up

I bought a 1 wire alt moths ago and now im stuck with it. Its a new powermaster 100 amp 1 wire.

Now ready for install and im wondering what to do with the extra wires from my wiring harness

1969 camaro SS 350 man. trans.

I have read the mad electronics 1 wire vs 3 wire and for now im going to stick with the one wire
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Old 08-01-2006, 11:52 AM
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Just tuck the other wires away somewhere. Just run the one wire to your starter, or directly to your battery.
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Old 08-01-2006, 11:57 AM
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Don't worry about it, I have been running a 1 wire alt for years and I have never had a problem.

Duke
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Old 08-02-2006, 12:27 AM
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Doc here,

Run one single 10 gauge wire from the Alternator to the starter Solenoid battery cable bolt, Via a PROPER fuse link.

Take the Brown and Red wires and cap them off, mark them as alternator "Lamp" and "Excitation" , and tie them back where they won't short on anything.

That will hold ya until you upgrade.

Doc
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Old 08-02-2006, 05:37 AM
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Doc please explain a proper fuse link
thanks for the help
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Old 08-02-2006, 06:11 AM
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Quote:
Originally Posted by chirpn69
Doc please explain a proper fuse link
thanks for the help

what size & where to get them ]Please.









Mustangsaly
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Old 08-02-2006, 08:22 AM
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Fusible links are short pieces of wire 4 sizes smaller than the wire it is protecting, i.e. a 10 gauge circuit will use a 14 gauge fusible link. A proper fusible link, besides being the right size, is designed with special insulation that will remain intact even though the wire has melted. More info on circuit protection here:

http://www.autoshop101.com/forms/hweb1.pdf
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Old 08-02-2006, 11:16 AM
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mad electronics ??????

chirpn69--- I don't follow your comment concerning mad electronics. I googled mad electronics and searched this web sight but found nothing that explained what you wrote. Am looking at purchasing a one wire alternator system but your thread makes it sound like I should reconcided. Would you please elaborate Thankyou
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Old 08-02-2006, 12:19 PM
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Here's the MAD treatise on remote voltage sensing:

http://www.madelectrical.com/electri...esensing.shtml
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Old 08-02-2006, 05:09 PM
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Quote:
Originally Posted by chirpn69
Doc please explain a proper fuse link
thanks for the help

Doc here,

Fuse link...

Is a Wire JUNCTION designed to melt when certain ampacity Conditions are exceeded over a period of time..

Unlike a fuse..which will open milliseconds after a spike, a Fuse link will take time to heat and melt open..

Fuse links and maxi fuses are used to protect high current potential draws from catastrophic failures..Instead of harness burnout and fire..a link will open usually leaving the vehicle powerless..

Fuse links Are NEVER installed in a Cabin/Passenger area..Always under the hood in the engine Bay..They do their job by melting open and can cause surrounding fire / Damage to interior parts, which can melt and produce toxic fumes in a closed cabin also..

Most Pre~1970 Vehicles did not have fuse links factory installed..most manufactured after 1970 did...and the older ones that have ha some upgrading, had them installed (if the job was done right..)

To gauge your link, look up on an AWG chart, The size of your wire, composition of the wire and the length of the wire run, in order to get the MAXIMUM current that wire will safely carry, and purchase your link accordingly..If the Maximum ampacity of the wire for instance is 65 amps, than your link will be 60 amps..

Common misconception.."Fuses are designed to protect the end user device"..

Not so..They are designed to protect the wire between from melt down / fire..

were the fuse designed to protect the end user device..With the Digital Electronics we have today, at the first sign of trouble the device would be destroyed long before an analog fuse could open up..long before (in milliseconds)

This is a massive short WITH a Fuse link...



THIS is a a massive SHORT WITH a fuse link Defeated..



Doc
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Old 08-02-2006, 05:16 PM
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Quote:
Originally Posted by daoldbuick
chirpn69--- I don't follow your comment concerning mad electronics. I googled mad electronics and searched this web sight but found nothing that explained what you wrote. Am looking at purchasing a one wire alternator system but your thread makes it sound like I should reconcided. Would you please elaborate Thankyou
Doc here,

Here is the article I think you are looking for..

Mad Electrical 1 wire Vs 3 wire Alternator

Doc
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Old 08-03-2006, 01:11 AM
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Our 65 Pontiac 2+2 did not have a fusible link, so when the alternator shorted out the entire length of #10 gauge wire between the alternator and starter became the link - melting the entire bundle down until nothing was left but the burned through wire. Really lucky that the top of the engine was very clean and no fire resulted. We installed new wiring with the #14 gauge link.
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