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Plow head light is dim

Discussion in 'Truck & Equipment Repair' started by dneiding, Sep 22, 2008.

  1. dneiding

    dneiding Member
    Messages: 36

    One of my plow head lights is very dim (yellow looking instead of bright white). The lights bulbs themselves are brand new; the old one was the same way so I replaced them but that obviously didn’t work.

    What could the problem be? A bad ground?

    Thanks in advance,

    Derek
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    What kind of plow lights, what kind/type of plow, and what kind of truck would be helpful. ;)
     
  3. dneiding

    dneiding Member
    Messages: 36

    85 Chevy K20. Western cabel operated plow. The lights are square and the plastic housing says Meyer so I assume they are not the original Western lights.
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Ok more than likely you do have a ground problem. Some of the older Meyer lights were grounded directly through the mounting bolt so in addition to checking the wiring make sure to check inside the light, as well as the mounting point itself for good contact.
     
  5. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Might even check all the ground lines on the truck under the hood. You can get stuff feeding back to ground in weird ways.
     
  6. iowaplowboy

    iowaplowboy Member
    from Iowa
    Messages: 37

    Yep, ground. Find some good metal and CLEAN it before attaching ground.
     
  7. MECHMAN

    MECHMAN Junior Member
    from 37924
    Messages: 3

    The overall voltage of the truck could be low also. Those old chevys usually sit around 13.5V, which can accentuate a poor ground. Bumping the voltage/alternator up to around 14.7V will really perk up lights and pumps.
     
  8. KGRlandscapeing

    KGRlandscapeing 2000 Club Member
    Messages: 2,660

    meyer lights r just crappy learn to drive in the dark. All joking aside at least you found out that it dosent work now insted of the middle of a storm.
     
  9. MECHMAN

    MECHMAN Junior Member
    from 37924
    Messages: 3

    You could always just add some more halogen driving lights to the plow booms, it makes a big difference. Make sure you run ground wires directly to the battery or chassis grounding point. Trying to ground through all those bolts makes for a poor connection.
     
  10. dneiding

    dneiding Member
    Messages: 36

    It was a bad ground. I rewired the ground wire and all is good now.

    Thanks!