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Dimming headlights

Discussion in 'Boss Plows Discussion' started by jeffcof150, Jan 14, 2012.

  1. jeffcof150

    jeffcof150 Junior Member
    Messages: 19

    Can I do anything about my headlights dimming while using my plow. I have a 7 poly sport duty on a 2003 f150. Or do I just deal with it
  2. old skool

    old skool Senior Member
    from NW IL
    Messages: 167

    Give us some more info... did they just start doing this? is this a new plow on the truck? How bad do they dim? What is your volt meter reading?

    Its not uncommon for the lights to dim and the volt meter to drop when you raise or angle the plow, but the volt meter should pop back up in the 13-14 volt area when you let off the controls. Do you know the truck's battery condition? Also, how many amp is your alternator??
    Last edited: Jan 14, 2012
  3. pooleo8

    pooleo8 Senior Member
    Messages: 271

    You should upgrade the alternator and do the car audio "big 3" Mine sometimes dim cause snow has gotten on the alternator/belt, causing it to slip
  4. Invapd

    Invapd Junior Member
    Messages: 16

    I have a 2011 2500 HD with the Snow Plow Prep Package, which means I have two batteries and the upgraded alternator. My lights dim and heater fan lowers when I move the plow. It is normally at 14 and goes to about 13 when I move the plow. this just does not seem normal to me. Any thoughts?
  5. old skool

    old skool Senior Member
    from NW IL
    Messages: 167

    That sounds pretty much normal ...You are pulling a LOT of amps when everything is running. The real test is how many volts you show after plowing for hours..... if it starts dropping below 12 volts when your not running the plow motor, your charging system is not keeping up.
    Last edited: Jan 20, 2012