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Thread: Wiring question voltage regs.
          
   
   

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  1. #1
    tango's Avatar
    tango is offline CHR Member Visit my Photo Gallery
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    Is it a one wire alternator or does it have a two wire plug and the one battery wire ? And if it has the plug what year car is it off of ?

  2. #2
    oddcarout's Avatar
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    Car Year, Make, Model: '68 Biscayne
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    here is a diagram

     



    alt and the three wires connected and two not connected. The big black tube represents the wires where they are wrapped.
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  3. #3
    tango's Avatar
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    Your alternator is the external regulator type . Starting in 1973 GM went to the internal regulator alternators . The best thing to do is pick up a power master one wire alternator with the one wire hook up . Then all you need to do is hook up the red battery wire and unplug the the body mounted regulator . And this should work and charge much better then the factory set up did . Or if you have a good 1973 to 1980 Chevy alternator with the plug I can tell you how to make it work on your 68 chevy wiring . I think its better to go with the one wire alternator . I have seen them at some local auto stores . A 70amp is enough for your car .

  4. #4
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    This is the only one I could find on my computer.......
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    Its gunna take longer than u thought and its gunna cost more too(plan ahead!)

  5. #5
    oddcarout's Avatar
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    Quote Originally Posted by shawnlee28
    This is the only one I could find on my computer.......
    Thanks Shawn.

  6. #6
    oddcarout's Avatar
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    One wire? what is the advantage.

     



    I have read that one wire alts are problematic and should be avoided.

    if I get a "oem" alt and new reg. how does it get plug back in? (see attached photo)

    also if i go with a 73+ can you explain how that would work. I had a 75 and never had any probs.

    Thanks
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