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both headlights dead!! HOW?? help

Discussion in '2nd Gen. Tacomas (2005-2015)' started by bcmedic, Nov 4, 2010.

  1. Nov 4, 2010 at 7:13 AM
    #1
    bcmedic

    bcmedic [OP] Well-Known Member

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    last night i went to turn on my headlights like any other night. and they wouldnt come on. the fog lights would just flick on then turn back off instantly. i can hear the headlight relay going. i havent had the chance to take my multimeter and find out where the power is/isnt. tailights are on, even though headlights arent on with the switch on the on position. DRL's turn off like supposed to when headlights are on the on position....so bizarre

    yes fuses are intact.

    thanks for the help


    have ddm tuning 35w hid on both fogs and headlights.
     
  2. Nov 4, 2010 at 7:20 AM
    #2
    cam-shaft

    cam-shaft Well-Known Member

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    Your problem is that ddm tuning junk. I tried that stuff and it lasted for a short period but it is cheap. Nothing like being up in the middle of the mts at dark and you cannot get your headlights to work.
     
  3. Nov 4, 2010 at 7:30 AM
    #3
    tacobox

    tacobox Evasive Maneuvers PMKMS

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    Check voltage before and after the ballasts
     
  4. Nov 4, 2010 at 8:37 AM
    #4
    KPT

    KPT sees what you did there.

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    There's plenty of people running DDM's with no issues at all.

    Keep in mind they have a lifetime warranty as well.
     
  5. Nov 4, 2010 at 9:07 AM
    #5
    bcmedic

    bcmedic [OP] Well-Known Member

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    I agree. With both dying at the exact same time seems a little more suspect than the ballast/bulbs. I will check regardless. Could it be the relay??
     
  6. Nov 4, 2010 at 9:42 AM
    #6
    jdtemple

    jdtemple Well-Known Member

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    That is also a sign the voltage regulator is going out. Have the alternator and voltage regulator checked.
     
  7. Nov 4, 2010 at 9:54 AM
    #7
    bcmedic

    bcmedic [OP] Well-Known Member

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    It's got 20,000 miles. Hardly time to already be failing.
     
  8. Nov 4, 2010 at 10:00 AM
    #8
    Mark C.

    Mark C. If you want it bad, you usually get it bad!

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    Might also want to check the output from the relay when the lights are switched on. Relay could be flipping with coil, but power contacts to lights may have opened.

    Don't know anything about the DDMs.
     
  9. Nov 4, 2010 at 10:02 AM
    #9
    jlvhrse

    jlvhrse Well-Known Member

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    Same thing happened to my HID headlights... never found the problem just took them out and went back to stock until I can get a whole new set up...

    although mine started turning off one at a time randomly but would turn back on if I turned em off and back on.. it got progressively worse until neither would work at all.
     
  10. Nov 4, 2010 at 10:04 AM
    #10
    inouk

    inouk Well-Known Member

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    Sounds like a defective relay, I would check it first.
     
  11. Nov 4, 2010 at 10:21 AM
    #11
    bcmedic

    bcmedic [OP] Well-Known Member

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    Not the relay. Took mine dropped it in my neighbor's and took his into mine. Still not going. Voltage is good till the fuse box. Gotta go up work. That's as far as I got for now
     
  12. Nov 9, 2010 at 12:15 PM
    #12
    gorilla33

    gorilla33 Stock Radiant Red

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    I have the a similar problem. Lights do not come on. I can restart my truck and then try the lights again and that works most of the time. Any ideas?
     
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