One Wire Alternator

Dawgbone · Mar 30, 2023

So I was tightening up the belt on my alternator and had to take the wire off of it. I forgot to put it back on when I started it up. Several wires were smoking and almost started a fire. What the heck? 12 volt system.

JMOR · Mar 30, 2023

(quoted from post at 13:55:03 03/30/23) So I was tightening up the belt on my alternator and had to take the wire off of it. I forgot to put it back on when I started it up. Several wires were smoking and almost started a fire. What the heck? 12 volt system.

always expect smoke & fire when I try to discharge a battery, capable of several hundred amperes, thru a 10 or 12 gauge wire, and you should too.

warbaby · Mar 30, 2023

That one big wire is a hot wire direct to the non-grounded (assume ''+'') battery side of the starter solenoid. The ring terminal on the
alternator end of that loose wire must have touched some metal and ''grounded out'', giving you a direct path to the grounded side (''-'') of
the battery.

Some of your other, smaller gauge wires, just minding their own business and carrying current to other places within the electrical system
didnt appreciate that!

Abbby · Mar 30, 2023

Yep thats a live wire right from the battery

Tim PloughNman Daley RIP · Mar 31, 2023

Hey Jesse-
Can you post that picture of a Delco 10SI 1-Wire ALT you did with the wiring? I can't find it. I have the 3-Wire unit picture.

Tim Daley(MI)

JMOR · Mar 31, 2023

(quoted from post at 06:46:22 03/31/23) Hey Jesse-
Can you post that picture of a Delco 10SI 1-Wire ALT you did with the wiring? I can't find it. I have the 3-Wire unit picture.

Tim Daley(MI)

im, for 1-wire 10-SI, just eliminate the wire & diode highlighted in green and the Output stud to terminal #2 jumper.

Dawgbone · Mar 31, 2023

Thanks guys. Replaced three burned wires and it started right up. I appreciate your help.

One Wire Alternator

Dawgbone

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JMOR

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warbaby

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Abbby

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Tim PloughNman Daley RIP

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JMOR

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Dawgbone

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