electrical headlight failure

Discussion in 'General Harley Davidson Topic' started by tdward, Sep 1, 2014.

  1. tdward

    tdward New Member

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    What would cause headlights, auxiliary lights and running lights to shut down all at once
     
  2. gusotto

    gusotto Junior Member

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    Power supply (fuse) is my 1st thought.
    Always check to see if you have needed power and if not, trouble-shoot the path of supply.
     
  3. Rydit

    Rydit Member

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    gotta be relay or circuit breaker in there somewhere. my '10 has a "high current relay" that will cause the same symptoms.
     
  4. Jack Klarich

    Jack Klarich Expert Member

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    Do you have ignition? The contacts in the switch may be dirty
     
  5. bravehart

    bravehart Member

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    if you check your fuse and it is good then check out the lighting relay, they seldom go bad but it does happen, I know, long ride home in the dark:( they don't cost much so I carry a spare one now. mine was on a 2010FLHTC
     
  6. dbmg

    dbmg Experienced Member

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    Year make and model please....:s
     
  7. 03HD883R

    03HD883R Active Member

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    The OP has a 1999 ultra classic.