headlight problems

Discussion in 'Peterbilt Forum' started by coulds, Jun 12, 2013.

  1. coulds

    coulds Bobtail Member

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    When i turn headlights on low beam my high beam are on but I have checked all the wiring,changed lights new plugs and still samething any help would be gladly appreciated.
     
  2. bubbanbrenda

    bubbanbrenda Road Train Member

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    What year/model?
     
  3. coulds

    coulds Bobtail Member

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    its a 1994 379 pete
     
  4. Sublime

    Sublime Road Train Member

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    Check for corrosion in the fuse box, quite common on Pete's. And check relays.
     
    coulds Thanks this.
  5. coulds

    coulds Bobtail Member

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    when you say in fuse do you mean behind ?
     
  6. Sublime

    Sublime Road Train Member

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    Everywhere. We've had them with green stuff growing where you could see it and also on the backside. But check relays first, we've had some that at a casual glance look good on the outside but are junk on the inside.
     
    coulds Thanks this.
  7. coulds

    coulds Bobtail Member

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    thanks I will check everything
     
  8. Luwi67

    Luwi67 Heavy Load Member

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