2006 Peterbilt 378 Wiring schematics

Discussion in 'Peterbilt Forum' started by Deere160, Sep 26, 2022.

  1. Deere160

    Deere160 Bobtail Member

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    Sep 26, 2022
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    I just recently purchased a Peterbilt with a c-13 and a 10 speed eaton. It has a bunch of random issues with the headlights staying on then the running lights will stay on. Does anyone have the electrical diagram for this truck? I have been on Supermiller and the diagrams are close, but mine appear to be different?
     
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  3. Deere160

    Deere160 Bobtail Member

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    Sep 26, 2022
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  4. Oxbow

    Oxbow Road Train Member

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    I don't, but I got schematics for my 89s from my parts guy at the dealer in pdf.

    By the sounds of your issues you might try swapping relays.
     
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