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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. Jan 2, 2024 at 5:04 PM
    #5101
    dborrer

    dborrer Well-Known Member

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  2. Jan 2, 2024 at 5:07 PM
    #5102
    daveeasa

    daveeasa FBC Harness Solutions Vendor

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    https://www.tacomaworld.com/threads/the-921-led-reverse-light-bulb-study.490137/#post-15088360
     
  3. Jan 2, 2024 at 5:23 PM
    #5103
    crashnburn80

    crashnburn80 [OP] Vehicle Design Engineer

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    Those are Spyder lights, they are terrible in every performance metric. You cannot retrofit an H4 into an H1 assembly, the optics are all wrong even if you could make it fit. Those lights are a massive downgrade from stock, and nothing you can do really makes them better since improved light sources require quality optics to make them work, and that is something those lights do not have, they are sold primarily for cosmetic looks. Replacing with OEM will be your best solution.

    For an aux reverse light in that application, I'd personally lean toward Baja. The open bucket reflectors do a better job at the style of flood you'd want in that application compared to other optics and the 5000k color temp is nicer than 6000k. The S2 Pro does hit thermal roll back very quickly and scales output back from peak output intensity, I don't know that Baja ever addressed that but I'd suspect not. For a reverse light application I don't think it is a big deal though.
     
  4. Jan 2, 2024 at 5:24 PM
    #5104
    Watermallon

    Watermallon ID Tacooo

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    Fair enough. Thanks for the reply.
     
  5. Jan 2, 2024 at 5:25 PM
    #5105
    Toy_Runner

    Toy_Runner Well-Known Member

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    @Watermallon

    ...no... don't do that. That reflector is meant for a single filament bulb. Just because the bulb could be made to fit does not mean it will perform... at all... as intended.
     
    crashnburn80[OP] likes this.
  6. Jan 2, 2024 at 5:33 PM
    #5106
    Watermallon

    Watermallon ID Tacooo

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    Yup that’s why I’m asking yall. Thanks
     
  7. Jan 2, 2024 at 5:49 PM
    #5107
    Sharpish

    Sharpish Well-Known Member

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    Argh I attempted to adjust my headlights down and went too far. @crashnburn80 do you have a link to a description on the proper way to setup headlight aim?
     
  8. Jan 2, 2024 at 5:50 PM
    #5108
    CraigF

    CraigF Well-Known Member

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    none yet
  9. Jan 2, 2024 at 5:51 PM
    #5109
    crashnburn80

    crashnburn80 [OP] Vehicle Design Engineer

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    Norton and TacoLolz like this.
  10. Jan 2, 2024 at 6:03 PM
    #5110
    Sharpish

    Sharpish Well-Known Member

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  11. Jan 2, 2024 at 6:11 PM
    #5111
    EricOutside

    EricOutside Well-Known Member

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    I've now purchased and installed 2 of the Headlight Services harnesses. Totally sold on the improvement this brings to night driving. First one I installed on my 2014 Tacoma and the second on my wife's 2012 Honda CR-V. Yes, I had to defeat the daytime running lights to do that to her car. Turns out simply removing fuse #21 in the pedal well fuse box did the trick.

    Highly recommend, would do this mod again and again.
     
  12. Jan 2, 2024 at 8:42 PM
    #5112
    crashnburn80

    crashnburn80 [OP] Vehicle Design Engineer

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    TLDR; you’re looking for a 2” drop at 25’ on level ground. 3” if you are lifted excessively high.
     
  13. Jan 2, 2024 at 10:09 PM
    #5113
    Sharpish

    Sharpish Well-Known Member

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    Thanks. I measured from the ground to the center of the headlight, 43” and marked 43” on a wall 25’ away and adjusted the cut off up to that mark. Seems ok.
     
  14. Jan 3, 2024 at 10:34 AM
    #5114
    crashnburn80

    crashnburn80 [OP] Vehicle Design Engineer

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    That sounds high, sounds like you have near zero slope and will be blinding other drivers. They should be angled down 2-3" over 25'. I'd pull the truck right up to the wall so the bumper is almost touching, mark the cut off line with tape on the wall. Then back the truck up 25'. Mark a new tape line 2-3" below your existing one. Then adjust your headlights to the lower line. In the chart in the link, you can see that headlights above 39.5" from the ground a 3" drop is spec'd due to the high ride height, 35-39" specs a 2" drop.
     
    Ridgewalker1, TacoLolz and Toy_Runner like this.
  15. Jan 3, 2024 at 1:46 PM
    #5115
    Sharpish

    Sharpish Well-Known Member

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    Ok thanks, I will do that!
     
    TacoLolz likes this.
  16. Jan 4, 2024 at 4:32 PM
    #5116
    Sharpish

    Sharpish Well-Known Member

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    Harness and bulbs installed. Getting dark now so I will be taking them a test drive!
     
    szidls and crashnburn80[OP] like this.
  17. Jan 4, 2024 at 6:06 PM
    #5117
    Sharpish

    Sharpish Well-Known Member

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    Huge improvement. It will really shine on country roads with no street lights etc.
     
    Norton, wdb and crashnburn80[OP] like this.
  18. Jan 4, 2024 at 6:09 PM
    #5118
    Watermallon

    Watermallon ID Tacooo

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    How did you end up aligning them?
     
  19. Jan 4, 2024 at 6:18 PM
    #5119
    Sharpish

    Sharpish Well-Known Member

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    I didn’t change the housings. I incorrectly adjusted the lights downward too much before I installed the harness etc today. So I was only off in the up/down axis. I followed crashes advice to fine tune them.
     
  20. Jan 4, 2024 at 6:18 PM
    #5120
    Sharpish

    Sharpish Well-Known Member

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    I have new pro housings but the original ones are still decent so I’ll swap the pros in next summer I think.
     

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