Anyone have a nice clear -hoot of 4 batt setup for 379 or diagram?

Discussion in 'Peterbilt Forum' started by staceydude, Jan 22, 2021.

  1. Coolbreezin

    Coolbreezin Light Load Member

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    I too have a 379, 1991 LN. Excellent thread, very education. Thank you all.
     
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  3. staceydude

    staceydude Medium Load Member

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    Love that hood on yours cool!

     
  4. Luwi67

    Luwi67 Medium Load Member

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    Long island
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    My 97 379 has 4 batteries in the box but they are wired as 2 banks 0f 2.
     
    Roger McG and lester Thank this.
  5. Joyce's Volvo

    Joyce's Volvo Light Load Member

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    Jun 28, 2016
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    Why go to the expense? Use what you have and add 2 more jumpers 1 on + to + and one on - to - .
     
    AModelCat Thanks this.
  6. Joyce's Volvo

    Joyce's Volvo Light Load Member

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    Are you running parallel solinoed Or 2 sets of cable to starter?
     
  7. wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    I run 2 sets of cables to the starter. 1 set to the 1st battery then the 1st short jumpered to the 2nd. The 2nd set to the 3rd battery that's jumpered to the 4th.
     
    lester and pushbroom Thank this.
  8. Luwi67

    Luwi67 Medium Load Member

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    2 sets of cable to starter and chassis ground. It’s the way Peterbilt did it then. Someone told me the reason was stronger cranking but I don’t know for certain.
     
  9. pushbroom

    pushbroom Road Train Member

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    Pete have 2 setups. 2 cables and 4 cables. The 2 cable setup uses 4/0 cable and all the batteries jumpered together.
    The 4 cable runs 4 cables at 2/0 each. The first two batteries are joined together and the rear are joined together. They do not join all 4 batteries as the factory cable ends are too thick to stack on one post.
    I prefer 2 cable due to a cleaner battery box.


    Also positive and negative cables both go to the starter. Grounds go from starter to frame, starter to engine, and starter to cab.
     
    stwik, D.Tibbitt and wore out Thank this.
  10. Luwi67

    Luwi67 Medium Load Member

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    Do you know Petes reasoning for the different set-ups?
     
  11. pushbroom

    pushbroom Road Train Member

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