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No Headlights

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Michael 247, Jan 23, 2020.

Page 2 of 2
  1. Jan 24, 2020 #11
    Michael 247

    Michael 247 Heavy Load Member

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    Dublin Va
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    When Headlights are not working the high beam indicator light stays lit even if I use the dimmer switch
     
    Michael 247, Jan 24, 2020
    Michael 247, Jan 24, 2020
    #11
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  3. Jan 24, 2020 #12
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Sounds like power is back feeding across the filaments in the bulbs due to no ground.
     
    BoxCarKidd, Jan 24, 2020
    BoxCarKidd, Jan 24, 2020
    #12
  4. Jan 24, 2020 #13
    Michael 247

    Michael 247 Heavy Load Member

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    Nov 20, 2017
    Dublin Va
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    Thanks..I will check grounds tomorrow..
     
    Michael 247, Jan 24, 2020
    Michael 247, Jan 24, 2020
    #13
    blairandgretchen Thanks this.
  5. Jan 24, 2020 #14
    SmallPackage

    SmallPackage Road Train Member

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    Marion Texas
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    I’ve had a dimmer switch or 2 go bad and do exactly like you discribe. No lights and indicator on. Had one go bad one time that turned lights out with high beams on and one high and one low would be on when it was on low beam setting. These were the old floor board mounted ones.
     
    SmallPackage, Jan 24, 2020
    SmallPackage, Jan 24, 2020
    #14
    spsauerland Thanks this.
  7. Jan 25, 2020 #15
    Michael 247

    Michael 247 Heavy Load Member

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    Nov 20, 2017
    Dublin Va
    0
    Dimmer switch is on turn signal..I unplugged it but it didn't change anything..
     
    Michael 247, Jan 25, 2020
    Michael 247, Jan 25, 2020
    #15
    SmallPackage Thanks this.
  8. Jan 26, 2020 #16
    Michael 247

    Michael 247 Heavy Load Member

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    Nov 20, 2017
    Dublin Va
    0
    I ran a Frame Ground Wire to the Ground Wires near Headlights..They are working now..Thank Y'all for the Help..
     
    Michael 247, Jan 26, 2020
    Michael 247, Jan 26, 2020
    #16
    SmallPackage and BoxCarKidd Thank this.
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