Dim left head lamp

larsmechlarsmech Marion, IaMember Posts: 2
edited October 2017 in Mercury
Left head light is dim and goes out on flash to pass. head lamp has been replaced.HELP


  • 0patience0patience Oregon CoastMember Posts: 1,712
    Check power to the terminals when you use the flash to pass.
    Put the negative test lead on the battery, as it is a known good ground.
    If you have proper voltage, then check your grounds.
    The symptoms you describe sound like a loss of ground.
  • larsmechlarsmech Marion, IaMember Posts: 2
    Thanks for to info found a blown fuse working fine now
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaMember Posts: 64,482
    You might check to see if that fuse is unusually warm. Sometimes there's other things going on, but looks like you've got it handled.
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