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I need some help guys. I have a 90 chevy pickup that the motor was stolen out of. when they took it they just chopped the wire bundle by the firewall. I need to get the alternator working. I know the big lug on the back of the alt is battery. But what are the other two in the plug. Can anyone tell me if these are alive with the key on or off. If someone can tell me when and if these are alive, maybe I can figure out which wires in the bundle belong here. I can't go by color code. thanx. wnk.
 
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