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Old 03-20-2011, 12:48 PM
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alternator wiring

while replacing my water pump i managed to rip one of the alternator wires out.. i took the ground off the battery and the truck still runs so im trying to figure out where the charging wire is supposed to go.. theres only two wires coming off the stud on the alternator, its a 1984 buick 3.8. do they both run down to the selonoid, one on the larger stud and one on the smaller? thx for any help, Mike.

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Old 03-20-2011, 12:49 PM
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also i know that it should be pretty obvious but.. the electrical is umm.... built by a crack head for lack of better words lol. im ready to just run a new hot wire to wherever it goes, trying to figure out which splice it tied into is quite aggravating
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Old 03-20-2011, 01:49 PM
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can i run a wire directly from the stud on the alternator to the + terminal on the battery? will this send a constant charge to the battery? wont that fry it?
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Old 03-20-2011, 01:58 PM
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What kind of vehicle are you working on. What style alternator is it.
Dont remove the battery cables with the car running, you will destroy your alternator and other electrical components.
Also if you could post a picture of what is broken it would help.
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Old 03-20-2011, 02:00 PM
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its a 84 chevy truck with a 86 buick regal 3.8, 2 wire alternator. never knew that could destroy stuff? ive always checked my alternator by removing the negative battery cable.. ill post a picture in one second but not sure if it will help..
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Old 03-20-2011, 02:07 PM
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ummm... how the hell do i put a picture on here.. enter text to be formated?
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Old 03-20-2011, 02:28 PM
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its not letting me add attachments for whatever reason, saying i didnt use a valid link even though i did. the pictures really wont help anyways, all they show is a lonely wire hanging from the alternator, its the charging wire..
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Old 03-20-2011, 03:07 PM
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directly from alternator to battery

basically cant figure out how to get my alt. to charge the battery so is there any harm in running wire directly from the back stud on the alternator to the positive terminal on the battery? it is a 1984 alternator so i believe it is internally regualted, this means that it will know when to shut off and not overcharge the battery right? it is a 2 wire alternator with one stud and a 2 wire plastic connecter, the alternator will run everything while the truck is running but it is not charging
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Old 03-20-2011, 03:47 PM
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Thats all you need.
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Old 03-20-2011, 03:49 PM
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Hi
Try the link
Rich

http://mightymo.org/Proj_OneWire.html
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Old 03-20-2011, 06:17 PM
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the stud does go to the battery but to charge the field wire on the two prong connector should be hot key on, the small wire is for the light. if you derect wire the field wire it will charge but the regulator will drain the battery when you shut it off.
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Old 03-20-2011, 11:08 PM
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Moving to electrical..
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Old 03-21-2011, 04:01 AM
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This should help, it's a conversion so just connect the dashed lines and that's how your 10 SI alt should be wired
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