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Wiring help req: high beam 12+/signal wire.....where?

Discussion in '3rd Gen Tundras (2022+)' started by 99ways2die, Jun 8, 2022.

  1. Jun 8, 2022 at 4:40 PM
    #1
    99ways2die

    99ways2die [OP] New Member

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    Does any one know where to pick up a 12V+ signal that the high beams are ON?
    (preferably inside the cab, but anywhere-really)

    Wiring up my bumper light bar, and I want it to turn ON/OFF when the high beams come ON/OFF.
    In the "old days" it was easy to find the high beam wire and use it as trigger on the relay, but so far all I see on the 2022 is that the (Platinum) headlight has 2x thick wires for constant power, and 4 tiny wires which probably just tell it what to do-internally.

    I wire all (till now?) my bumper bars with a 3-way switch, in the following way:
    ON-with high beam wire as trigger
    OFF
    ON-manual activation, any time (12V+ from batt as trigger)

    Any insight greatly appreciated.
    -99
     
  2. Jun 8, 2022 at 5:18 PM
    #2
    Brums

    Brums New Member

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    you trying to wire up the trd pro lightbar or aftermarket?
     
  3. Jun 8, 2022 at 5:31 PM
    #3
    Brums

    Brums New Member

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    well heres the headlight wiring diagrams

    appears to me, that they are signaled via CAN, or the "computer"

    upload_2022-6-8_20-34-13.jpg
     

    Attached Files:

  4. Jun 8, 2022 at 7:13 PM
    #4
    99ways2die

    99ways2die [OP] New Member

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    Aftermarket.
    Not looking to change my Platinum grille, nor am I willing to pay $700+ for a "leading" light bar+brackets.........so, here's my set up:
    1x OZ-USA 20" bumper light bar (utilizing $5 in HomeDepot brackets)
    2x OZ-USA 7" amber fog lights (also $5 in brackets, but 5+ HRS of tinkering and fabrication to make them fit/mount on the Plat grille; quite a hassle (had to remove 1 blade from the shutter system)).
    **Never mind my 6x horns (I make sure I'm heard when it matters).

    They're all wired/relayed up; just waiting on switch connections via high/low beam wire triggers.
    -99

    [​IMG]

    [​IMG]

    [​IMG]
     
  5. Jun 8, 2022 at 7:24 PM
    #5
    99ways2die

    99ways2die [OP] New Member

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    I was afraid of that - what now??
    There is no friggin' way I'm clicking buttons daily when I want this bar ON with my high beams at night.

    Can you look up/identify wiring of the steering column light switch(es)?
    Is it possible to use the signal from the high-beam light flicker for remote ON?
    ( you know, when you physically press the bar forward to activate high beams; something must turn 'on' to let the ECU know to activate high-beam circuitry.

    Any other ideas?
    Flipping switches on and off is just not practical when I (we) might want to use them in more instances than just pure off-roading.
    Thanks.
    -99
     
  6. Jun 8, 2022 at 7:46 PM
    #6
    99ways2die

    99ways2die [OP] New Member

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    [talking to myself]
    Well, thus far I found this:
    Lazer CANM8 Cannect Highbeam
    $ 115.00 USD
    "The CANM8 CANNECT HIGHBEAM is a CAN Bus Interface that provides a quick solution for detecting High Beam activity, for the installation of additional driving lights via a relay."

    Will it be the only way from now on to get that "high beam" signal?
    Will this even work?
    ...suddenly my budget LED light bar set up is getting a bit more expensive and complicated.
    :/
     
  7. Jun 8, 2022 at 7:48 PM
    #7
    Brums

    Brums New Member

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    let me put this out there first, i'm not a toyota tech, its been a few years since i have worked in a shop, i just subscribed to toyota TIS to try and figure out how to get the TRD pro light bar to come on with the factory connector, couldn't figure it out.

    from that color snip above that is a "unit" , appears that everything goes through that steering angle sensor module, and it all communicates via the computer

    if you wanna go rooting through your wiring, here is the connector that plugs into that sensor assembly, the list of stuff below it is what all runs through the connector

    would assume you would need to backprobe the wires while the connector is plugged in

    if you do this, it is at your own risk

    upload_2022-6-8_22-43-55.jpg

    position of connector

    upload_2022-6-8_22-46-27.jpg

    upload_2022-6-8_22-47-48.jpg
     
  8. Jun 8, 2022 at 7:52 PM
    #8
    Brums

    Brums New Member

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    you got me on that one, no clue whatsoever,

    i would just wire it to a switch myself, thats what im doing with the trd pro light
     
  9. Jun 8, 2022 at 8:43 PM
    #9
    99ways2die

    99ways2die [OP] New Member

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    Thanks for the info.

    I refuse to give in!
    Like I wrote b4, I want to use that light bar in "automatic" mode, with high beams ON/OFF, and there is no way I'm driving around with one hand on a separate switch to be ready to turn them off separately, if someone is coming in my direction.
    Even in the state park, where I use all my lights primarily (middle of the night boat/fishing trips), I don't want to scramble to turn off a light bar in a split second with a dedicated switch - I want to be able to do this with my regular "high beam" selector (or turn it on/off manually, in addition, as well).

    Anyway,
    I went through all offerings of CANM8, and I just placed an order for this:
    CANM8 CANNECT IDR8
    This unit can do the following:
    "Outputs - Standard IDR8:
    Speed Signal > 12v square pulsed output at approximately 4 pulses per 1 MPH.
    Ignition On > 12v (1A max) when the ignition is switched on.
    Left Indicator > 12v (1A max) when the left indicator is active.
    Right Indicator > 12v (1A max) when the right indicator is active.
    Service Brake > 12v (1A max) when the brake pedal is pressed.

    Dipped Beam > 12v (1A max) when the dipped beam is active.
    High Beam > 12v (1A max) when the high beam is active.

    Side Lights > 12v (1A max) when the side lights are active"

    For a little bit more $$ I decided on this one, b/c I will use the high beam output trigger to turn on my bumper light bar, and I will use the dipped (read: low) beam output trigger to turn on my amber fog lights - this should let me select which set of fog/driving lights I have set to automatically work with my low beams. I can select either set, or both (or none).

    Example:
    Normal conditions: OEM white fog lights ON, ambers OFF.
    Real fog: OEM white fog lights OFF, ambers ON...and active while low beams are ON.
    Night mode: OEM high beams ON, light bar ON - together.
    With this config both sets of OZ lights can be AUTO with respective activators, completely OFF, or ON regardless of lights/ignition/etc.

    If you/anyone is interested, I will report back once I receive this CANBUS interface...and we'll see if it works at all.
    If it does work, then any one with a TRD PRO light bar could potentially use the high beam only module to easily have their light bar activate with high beams.

    Till then.
    -99
     
    Last edited: Jun 8, 2022
    landphil likes this.
  10. Jun 8, 2022 at 9:31 PM
    #10
    Brums

    Brums New Member

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    well looking like the easiest way to get CAN Hi and Low signals probably going to be data link connector

    Pin 6 and 14

    upload_2022-6-9_0-28-48.jpg

    upload_2022-6-9_0-30-47.jpg
     
  11. Jun 9, 2022 at 5:08 AM
    #11
    99ways2die

    99ways2die [OP] New Member

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    Thank you.
    At least one thing easy to access in this truck..

    PS:
    I also have a set of backup lights, connected the same way, but those are tied into the "back up" circuitry via the hitch light connector (thank-G we still get those with 'normal' wiring). They come ON once truck is in reverse, or I can throw them ON manually, if I wish (no MIL codes thrown and everything done right with a dual current limiting diode setup).
    Never anticipated that front light would get that "smart"
    :)

    -99
     
  12. Jun 9, 2022 at 6:42 AM
    #12
    Brums

    Brums New Member

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    well the only other thing i think you could do would be to rip apart the headlight and take a power signal from one of the wires that is physically going to the highbeam leds, there is another forum member that took his apart to paint the silver piece inside, apparently kinda Pita

    https://www.tundras.com/threads/fwiw-2022-headlight-options.108297/
     
  13. Jun 9, 2022 at 7:38 AM
    #13
    99ways2die

    99ways2die [OP] New Member

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    Yeah, not really looking forward to perhaps destroying a $1000+ headlight just to explore this option.
    (I've done retrofits before so I'm pretty confident in splitting them open/etc...but would rather not if I don't have to)

    Ultimately, if I can't figure anything out w/o headlight teardown, I may just end up running them manually. :(
    We'll see if that CANBUS interface works, then if not, I'll test the steering sensor plug to see what it does (thanks for the diagrams again), then...if nothing else works, I'll roll my truck into a lake and call it a day!
    :p
    -99
     
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  14. Jun 9, 2022 at 7:59 AM
    #14
    Brums

    Brums New Member

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    they are more than that if you have the "premium" head lights, which i believe are standard on the platinum
    hell even the std headlights are stupid in price as well
    upload_2022-6-9_10-58-12.jpg
     
  15. Jun 9, 2022 at 8:09 AM
    #15
    99ways2die

    99ways2die [OP] New Member

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    Wow.

    ...I want my $100 1994 Tacoma back!
    LoL
     

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