1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

not enough wires?

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Old Mar 25, 2010 | 11:51 PM
  #1  
Zackqw's Avatar
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From: Washington
not enough wires?

alternator problem.. the back of the alternator i got a plug with 4 wire attachments to it.. only problem is.. only 2 wires are running to it.. could someone dig up a diagram for the wires? im lost were to find them.. it could mean the reason my alternator isint charging my battery thanks
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Old Mar 26, 2010 | 02:18 AM
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trochoid's Avatar
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From: St Joe MO
Download the FSM for your year from the link in my sig. There are only 3 wires that go to the stock alt, a pigtail tee connector and a power wire that goes to the battery.
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Old Mar 26, 2010 | 07:07 AM
  #3  
Oneiros's Avatar
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From: Australia
My S1 alt was the same, had the 4-pin plug with one or two missing - being an externally regulated model.

If you're planning on modding the car e.g. adding any electrical things like stereo amp, thermofan, etc.. you're better off upgrading the alternator to a later model internally regulated alt from e.g. s4. Can get you diagrams for the upgrade if needed, let me know.

Edit: get yourself a $20 multimeter, it's very handy for all electrical stuff and then you can test the voltage at the battery with the engine running, will determine the health of your alt
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