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  1. #1
    New Member
    Join Date
    Jan 2011
    Posts
    4
    Location
    Southern Illinois
    Tractor
    new holland 3930

    Default new holland 3930 headlights not working

    i have a 1997 3930-headlights quit-have power at fuse and switch seems to be working-have power on side where power comes out for rear lights-dash lights are working-wiring is in loom so cannot see it but no lights on front=what do i need to look for

  2. #2
    Veteran Member
    Join Date
    Oct 2005
    Posts
    1,432
    Location
    N. E. Ohio
    Tractor
    tc- 29d

    Default Re: new holland 3930 headlights not working

    check for power at headlight connection.
    dqdave1; tc-29D; woods 7500 bh; 7308 fel, land pride tiller, land pride rake, gill pulverizer, 60"mmm. , bucket forks , MZ16H

  3. #3
    Platinum Member repowell's Avatar
    Join Date
    Jan 2011
    Posts
    711
    Location
    East Texas
    Tractor
    NH Boomer 8N, NH TC40DA

    Default Re: new holland 3930 headlights not working

    Check your operator's manual. My 2005 TC40DA headlights get power straight from the switch for high and low beams, no relays. My 2010 Boomer 8N has relays for high and low beams. Could be either way.
    Randy

    NH Boomer 8N, 6' Squealer Rotary Cutter
    NH TC40DA, 16LA FEL, Red Master II Harrow
    Land Pride 6' Tiller, 7' Landscape Rake
    2008 GMC 2500HD 4X4 6.6 Duramax, Allison
    2003 GMC 2500HD 4X4 6.6 Duramax, Allison
    Big Tex 12GP 20' GN trailer
    Cub Cadet RZT 50"

  4. #4
    Epic Contributor
    R.I.P.
    jinman's Avatar
    Join Date
    Feb 2001
    Posts
    21,014
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: new holland 3930 headlights not working

    I know this sounds silly, but make sure both headlights are good by doing a continuity check of the filaments. A power surge or over-zealous alternator could have burned them out. Of course, if you can get to the bulbs, you can also check the connector it see if it is getting power and has the proper ground. Remember, ground is half of every circuit.
    Jim


  5. #5
    New Member
    Join Date
    Jan 2011
    Posts
    4
    Location
    Southern Illinois
    Tractor
    new holland 3930

    Default Re: new holland 3930 headlights not working

    I don't have a book on wiring-there is a relay of some sort on front of fuel tank next to fuse block-would this be a relay for headlights? Have checked plug on back of headlights with test light and have nothing

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