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The ultimate headlight upgrade H4 (not LED or HID)

Discussion in '2nd Gen. Tacomas (2005-2015)' started by crashnburn80, Oct 27, 2015.

  1. Jun 27, 2025 at 6:48 PM
    #5541
    JoeDirtPNW

    JoeDirtPNW Member

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    I followed this thread a few years ago.
    Upgraded to higher wattage bulbs in my headlights and fogs.
    Bought the harness kit for both, also wired the fogs to come on with the high beams (lots of forestry road driving).
    Spent the money and bought OEM headlight housings too!

    By far ive never had a better light combo. This setup kills any lightbar aux lights that ive seen. Bonus is that I never get bright lighted back unlike my new car with LEDs, 400 watts of Halogen !
     
  2. Jul 23, 2025 at 4:35 AM
    #5542
    ThePositiveWay

    ThePositiveWay Well-Known Member

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    My truck has the mod with the Headlight Solutions harness. Is there any reason I can't run some sort of aux light off of my passenger side's H4 headlight connector that is no longer in use? Considering installing a light bar behind the bumper and tying it into the truck's brights. I can't think of a reason this wouldn't work as long as I stay under 60 watts, but wanted to get some confirmation
     
    Last edited: Jul 23, 2025 at 7:38 AM
  3. Jul 23, 2025 at 11:28 AM
    #5543
    Digiratus

    Digiratus Adventurer

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    Why a light bar? Why not use something that is legal to augment your brights.
     
    308savage likes this.
  4. Jul 23, 2025 at 11:45 AM
    #5544
    ThePositiveWay

    ThePositiveWay Well-Known Member

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    I'm located in Tennessee, I should be ok to run a lightbar as the law reads "Every motor vehicle other than a motorcycle, road roller, road machinery or farm tractor shall be equipped with at least two (2) and not more than four (4) headlights, with at least one (1) on each side of the front of the motor vehicle." with the additional statement "Auxiliary road lighting lamps may be used, but not more than two (2) of the lamps shall be lighted at any one (1) time in addition to the two (2) required headlights".

    I will acknowledge that I may be misunderstanding something, but since my fog lights turn off when the brights come on, I would not exceed the limit of 4 total lights with this hypothetical lightbar. It would still come down to whether I can get something that can be aimed so that "No spotlight or auxiliary lamp shall be so aimed upon approaching another vehicle that any part of the high intensity portion of the beam therefrom is directed beyond the left side of the motor vehicle upon which the spotlight or auxiliary lamp is mounted, nor more than one hundred feet (100') ahead of the motor vehicle", but that will be on me to research and execute. I am currently just checking to see if I can, in fact, use the extra H4 socket as a power source for this light.
     
  5. Jul 23, 2025 at 4:08 PM
    #5545
    Toy_Runner

    Toy_Runner Well-Known Member

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    When considering auxiliary lighting, and looking over your state codes, especially inspection codes, always search to see if the section of relevant code/law has any sort of references or definitions as to what is considered auxiliary lighting. E.g. references to SAE J581/J583 compliance.

    There *are* lightbars with legitimate auxiliary high beam/driving light beam patterns, but most are not, being some variation of spot/flood/combo. Bear in mind, there are also maximum intensity/auxiliary lamp.

    I would simply tie into the harness for a relay trigger, keeping the power drawn through the relay not the oem headlight harness as well as giving you the ability to wire a switch in to seperately turn on/off the aux light seperate from your headlamps. That way if a cop has an issue with the light you can at least demonstrate it is not hardwired with your highbeams.
     
  6. Jul 23, 2025 at 4:13 PM
    #5546
    EL DUDE

    EL DUDE Well-Known Member

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    :welder:I appreciate the write up, but my LEDs can be seen from space
     

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