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new alternator, same problem

Old Mar 30, 2014 | 09:48 PM
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new alternator, same problem

installed a new alternator but still the same problem. I was told to take a wire and touch it to the positive battery terminal from the middle wire on the plug that plugs into the alternator.. it works and makes my alternator work but I have to do that every time I start my truck
 
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Old Mar 31, 2014 | 02:08 PM
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What color is the wire that you are touching the bat + too?
 
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Old Apr 1, 2014 | 05:56 PM
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yellow and black. its a 96 f150 5.0l..
 
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Old Apr 1, 2014 | 07:22 PM
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My diagrams do not show a yellow/black going to the alternator on a 96. It shows;

black/orange-output wire

yellow/white-voltage reference wire

lightgreen/red-charge trigger wire

white/black-jumper wire for stator
 
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Old Apr 7, 2014 | 09:38 AM
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What was the original issue? Im assuming no charge? Have you checked the main fuse between the alt and bat?
 
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Old Apr 12, 2014 | 09:41 AM
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The wire touch thing stems from the DC generator era when the field coil required polarizing.
 
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Old Apr 13, 2014 | 07:36 AM
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Touching the field wire to the bat + will throw the alternator systems to wide open charge and make it work.
 
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