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mystery alt wire?

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Old Mar 21, 2012 | 05:58 PM
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Default mystery alt wire?

the wire that connects to the top post on the back of the alt broke... as i unwrapped the wires so i could replace the end i found another wire... looks like an 8 or 10 gauge wire.. same guage as the one that goes to the post.... any ideas?
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Old Mar 21, 2012 | 06:03 PM
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Originally Posted by jman1
the wire that connects to the top post on the back of the alt broke... as i unwrapped the wires so i could replace the end i found another wire... looks like an 8 or 10 gauge wire.. same guage as the one that goes to the post.... any ideas?

Color of said wire would be very helpful to us.
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Old Mar 21, 2012 | 06:34 PM
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its black...
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Old Mar 21, 2012 | 06:53 PM
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My '74 has a black wire that grounds the alternator case.
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Old Mar 21, 2012 | 07:01 PM
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my alt has 2 thinner wires going into a white connector... 1 thinner wire to the bottom of the alt looks like a ground... a thicker wire to the post terminal and the same color and thickness wire with no where to go.....
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Old Mar 21, 2012 | 09:17 PM
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Anything black is a ground probably?
My alt has a black ground wire running off it to ??? but being a vette you can't have too many grounds!!!
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Old Mar 22, 2012 | 03:18 PM
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Ok... My bad... The wire is red... Same thickness and color as the one connected to the post on the back of the alt... And very much has juice to it!!! I touched it to the case of the alt and ZAP!
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Old Mar 22, 2012 | 03:44 PM
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did it break off the white connector on the side of the case?
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Old Mar 22, 2012 | 04:06 PM
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Nope.. The wire that goes to the post broke... When I unwraped the wires to get at it.. I found it hidden... Its live!! But was not connected to anything and the car was running fine... Over a year I have had it
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Old Mar 22, 2012 | 07:10 PM
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its possible a PO ran a new alternator wire to starter and left the old one. or there's also a wire for the underhood light that ties into the alt. + wire. someone may have wrapped it up in the harness. just some ideas.
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Old Mar 22, 2012 | 07:37 PM
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what bugs me is its a live wire... and its like 8 or 10ga... same as the gauge on the post of the alt.... im gonna have to trace it back cause its gonna bug me...
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Old Mar 23, 2012 | 06:19 PM
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Hi j,
Is this any help?
Regards,
Alan

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Old Mar 23, 2012 | 07:45 PM
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i have 2 of those red wires... both live... one was hooked up and one was taped up....
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Old Mar 24, 2012 | 05:54 PM
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Default mystery alt

mine is like that . could the other wire have anything to do with guage ?
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Old Mar 24, 2012 | 07:21 PM
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Originally Posted by msandym
mine is like that . could the other wire have anything to do with guage ?
do you have both wires hooked up??
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Old Mar 24, 2012 | 08:41 PM
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http://www.nrjvette.com/johdotukset/...tte%201977.pdf
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