No bright lights

Discussion in 'Peterbilt Forum' started by spurmonkey, Jan 25, 2021.

  1. spurmonkey

    spurmonkey Bobtail Member

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    Nov 7, 2020
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    98 379 , no bright lights! Changed the entire turn signal and dimmer switch to a brand new unit. Checked all the circuit breakers and fuses. Dash light shows it’s changed to bright but the head light stay on dim. Any help is much appreciated.
     
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  3. truckdriver31

    truckdriver31 Road Train Member

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    honestly thats a good thing
     
  4. spurmonkey

    spurmonkey Bobtail Member

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    How So
     
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  5. truckdriver31

    truckdriver31 Road Train Member

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    saves peoples eyes at night
     
  6. spurmonkey

    spurmonkey Bobtail Member

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    Thanks
     
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  7. truckdriver31

    truckdriver31 Road Train Member

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    is the key on when checking lights
     
  8. RocketScott

    RocketScott Light Load Member

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    Does a '98 still use relays to switch between high and low?

    My '89 does
     
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  9. 062

    062 Road Train Member

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    Have you confirmed 12v and ground at the plug?
    I’d back probe the ground at the plug with a jumper for giggles.
    If you don’t have 12v switch relays, then if nothing start chasing wires.
     
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