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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 24, 2021 at 11:22 AM
    #3981
    TacoFergie

    TacoFergie Well-Known Member

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    At least your man enough to admit it!! Lots of big ego's running around nowadays, glad you don't fall into that crowd. Not many that follow this or crash's other lighting threads are though, we are a special breed of nerd in here. haha

    Stock wiring does a great job of reducing voltage and amperage to the bulb! haha Outside of that, you "could" decrease voltage in a few different ways. But at the consequence of brightness of course. I don't think it's been tried, but it is absolutely possible.

    Something like this could be used, but you'd have to use one per headlight.
    https://www.amazon.com/DROK-Convert...+down+voltage+regulator&qid=1624558896&sr=8-3
     
  2. Jun 24, 2021 at 5:43 PM
    #3982
    Empty_Lord

    Empty_Lord Toyotaholic

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    Wait you got the tundra back?
     
  3. Jun 24, 2021 at 5:46 PM
    #3983
    daveeasa

    daveeasa FBC Harness Solutions Vendor

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    No. Doesn’t mean I can’t start my mods for it, though, right???
     
  4. Jun 24, 2021 at 5:50 PM
    #3984
    Empty_Lord

    Empty_Lord Toyotaholic

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    Not at all.



    but if you happen to make a nice sealed headlight harness in the future (that is fitted to a tundra) let me know. I just don’t have the free time to do it. LOL.
     
  5. Jun 24, 2021 at 5:57 PM
    #3985
    daveeasa

    daveeasa FBC Harness Solutions Vendor

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    I will for sure make you one. I owe at least that much.

    What I don’t have are optimal dimensions. Relay to battery, relay to driver light and either driver light to passenger light or relay to passenger light.

    Now it’d be super cool if we could use H9 connectors at the bulb end but I assume those won’t fit and you wouldn’t want to give up high beams if they did. So it’ll only be sealed at the relays.

    I can also take an existing harness and redo just the relay portion if the lengths are all good to go. But as of today I gave 14 gauge inline fuses and ring terminals.

    I don’t have 12 gauge but that seems like overkill to me. Not sure what other harnesses are using.
     
  6. Jun 24, 2021 at 6:03 PM
    #3986
    Empty_Lord

    Empty_Lord Toyotaholic

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    My headlight solutions has a mix of 12 and 10 gauge. There’s 0 rush for anything. It’s working just fine right now! But this harness will end up in one of the tacomas when I or someone gets around to making a nicely fit harness for the tundra. I’ve still gotta get my switch pro and all those goodies ready for lighting and a compressor eventually.
     
  7. Jun 24, 2021 at 7:08 PM
    #3987
    daveeasa

    daveeasa FBC Harness Solutions Vendor

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    Geez 10 gauge is a bit nuts.

    Hit me with some numbers and I’ll schedule yours for next week. I think I can even use 12 gauge if I can source the terminals.
     
    Last edited: Jun 24, 2021
  8. Jun 24, 2021 at 8:57 PM
    #3988
    Empty_Lord

    Empty_Lord Toyotaholic

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    Yea it’s a super beefy harness for sure. Just wish they used a nice sealed relay box. (Minor thing though)

    I need to wire up the switch pro and if I can integrate the horn harness I have into the headlight harness with a 3rd relay. (30 amp draw from the caddy horns) I just hate rats nests of wiring
     
  9. Jun 24, 2021 at 9:07 PM
    #3989
    daveeasa

    daveeasa FBC Harness Solutions Vendor

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    I can do 12 gauge with the sealed relays but that’s as big as it goes. You ok with that? I certainly am.

    I can do a 3rd relay for horns too. How long of a trigger wire? Positive or negative?
     
  10. Jun 24, 2021 at 9:20 PM
    #3990
    Empty_Lord

    Empty_Lord Toyotaholic

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    Trigger wire I need to measure. They’re 2 wire horns so it needs ground and postive honestly I can wire the horn side fairly quick here since I have the proper connectors. It’s just eh headlight stuff that I haven’t really massed the parts for
     
  11. Jun 24, 2021 at 9:36 PM
    #3991
    daveeasa

    daveeasa FBC Harness Solutions Vendor

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    I'm thinking 24 position GEP could be nice. The mini relays are rated at 20amps which seems like it'd be adequate for this and a 24 would have enough room for 3 relays and 3 fuses. The only issue there is that the 24 position GEP is backordered.

    The full size relays at 30 amps can work if I figure out a plan for the fuses which doesn't look super ugly.
     
  12. Jun 24, 2021 at 9:46 PM
    #3992
    Empty_Lord

    Empty_Lord Toyotaholic

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    Hmm. The 24 is STILL back ordered? That’s the one I was looking at getting for the horns and lights. But they’ve been back ordered for a while

    probably take this to DM because we’re deviating from the threads topic
     
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  13. Jun 25, 2021 at 2:31 PM
    #3993
    afo45td

    afo45td New Member

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    Where in the 500 page opus. ( Great detail) can read simply what replacement bulb do I need, what's the cost, will they fit a 2015 tacoma and require no Voltage meter and no other light housing parts ? other wise, greaT DETAIL, a tiny bit more than I NEEDED.
     
  14. Jun 25, 2021 at 2:37 PM
    #3994
    gotblika

    gotblika Well-Known Member

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    All you need to know is in the first post.
     
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  15. Jun 25, 2021 at 3:11 PM
    #3995
    NBourque

    NBourque Well-Known Member

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    Read the first post.
     
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  16. Jun 25, 2021 at 3:12 PM
    #3996
    crashnburn80

    crashnburn80 [OP] Vehicle Design Engineer

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    Welcome! Everything is in the first post.

    Bulbs: https://www.bulbamerica.com/product...super-bright-premium-off-road-automotive-bulb
    Harness: https://www.headlightservices.com/Wiring.html

    Note that those bulbs require the harness to be used. Otherwise you'll want to use a performance stock wattage bulb like the Philips Racing Vision +200s.
     
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  17. Jun 25, 2021 at 6:10 PM
    #3997
    se7enine

    se7enine MCMLXXIX

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  18. Jun 30, 2021 at 9:10 PM
    #3998
    HLS

    HLS New Member

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    I want to add to the bulb life debate. I am not sure that everyone understands how a halogen bulb functions. Halogen bulbs need proper voltage and heat to last. It part of the design.

    From How Stuff Works:
    A halogen lamp also uses a tungsten filament, but it is encased inside a much smaller quartz envelope. Because the envelope is so close to the filament, it would melt if it were made from glass. The gas inside the envelope is also different -- it consists of a gas from the halogen group. These gases have a very interesting property: They combine with tungsten vapor. If the temperature is high enough, the halogen gas will combine with tungsten atoms as they evaporate and redeposit them on the filament. This recycling process lets the filament last a lot longer. In addition, it is now possible to run the filament hotter, meaning you get more light per unit of energy. You still get a lot of heat, though; and because the quartz envelope is so close to the filament, it is extremely hot compared to a normal light bulb.
     
  19. Jun 30, 2021 at 9:15 PM
    #3999
    dirtnsmores

    dirtnsmores A camping truck

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  20. Jun 30, 2021 at 9:20 PM
    #4000
    crashnburn80

    crashnburn80 [OP] Vehicle Design Engineer

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    Yes! There is also the new Osram Laser +200 but I haven’t had a chance to compare them. Note that Amazon often does a poor job of bulb packaging, little to no padding in an often oversized box.
     

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