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2006 Hi beams Not working, 379

Discussion in 'Peterbilt Forum' started by Grumpy69, Aug 27, 2014.

  1. Aug 27, 2014 #1
    Grumpy69

    Grumpy69 Bobtail Member

    1
    0
    Aug 27, 2014
    0
    I have a 2006 379 Peterbilt EXHD. My Hi beams were functioning fine and then one day they just stopped. When I lift up the turn signal handle to turn them on all 4 headlights go out. Low beams function correctly. I have put in brand new fuses and even replaced the $200 plus dollar multi function swith, Turn signal handle. Also, when I put the hi beams in the on position the dash indicater light does not come on. Yes, the ignition switch is on and the hi beams are not working whether I am moving or sitting, rain or shine. Are there anymore relays somewhere that I am not aware of. HELP.
    LILMFB69@gmail.com
     
    Grumpy69, Aug 27, 2014
    Grumpy69, Aug 27, 2014
    #1
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  3. Aug 27, 2014 #2
    moraramis

    moraramis Light Load Member

    224
    253
    Aug 2, 2014
    Arkansas
    0
    Spread a little peanut butter on the fuse box. The peanut butter will get in there and fix it, or at the very least it'll make it taste better.
     
    moraramis, Aug 27, 2014
    moraramis, Aug 27, 2014
    #2
  4. Aug 27, 2014 #3
    walterjacobo15

    walterjacobo15 Light Load Member

    104
    91
    Aug 23, 2014
    Here and there
    0
    It sounds more like a wiring issue. I would start by closely inspecting the wiring going to the head lamp assembly on the engine compartment. Remove zip ties, clamps and wiring protectors (black flex tubing) if you have to. Make sure to put everything back the way it was. Look for chaffed wires, green dust or crimps. GL!
     
    walterjacobo15, Aug 27, 2014
    walterjacobo15, Aug 27, 2014
    #3
  5. Aug 28, 2014 #4
    RocketScott

    RocketScott Medium Load Member

    563
    892
    Apr 10, 2013
    Kentucky
    0
    Check the connectors on the back of the headlamps. Mine were acting weird like you describe and cleaning all the contacts fixed it.
     
    RocketScott, Aug 28, 2014
    RocketScott, Aug 28, 2014
    #4
  7. Apr 7, 2016 #5
    tobie town trucker

    tobie town trucker Light Load Member

    103
    23
    Jan 12, 2011
    Mississippi
    0
    Did you ever figure it out? I'm having the same problem on a 2007. High beams go out when it rains. Just last night I found out that my high beam fuse blows when I turn on my windshield wipers
     
    tobie town trucker, Apr 7, 2016
    tobie town trucker, Apr 7, 2016
    #5
  8. Apr 7, 2016 #6
    tobie town trucker

    tobie town trucker Light Load Member

    103
    23
    Jan 12, 2011
    Mississippi
    0
    I finally figured out my problem. My wiper arms behind the dash were rubbing a wiring harness.
     
    tobie town trucker, Apr 7, 2016
    tobie town trucker, Apr 7, 2016
    #6
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