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2018 Tundra LED headlight wiring info with diagrams

Discussion in 'Lighting' started by thomasbus337, Sep 6, 2017.

  1. Jul 25, 2018 at 9:37 AM
    #871
    Canary2323

    Canary2323 New Member

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    Hi can anyone help with me wiring for a 08 Toyota tundra I have ah11 wiring and I know harness is an h4 so not sure where to start any herlp much appreciated
     
  2. Jul 25, 2018 at 10:09 AM
    #872
    trooper669

    trooper669 New Member

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    TRD front and rear sway bars/ CAI. Recon smoked tail lights. LED Bed Lights. LED grill lights Bilstein 6112 front and 5100 rear. RC 1” rear block. RC lower grill LED bar. Nitto Ridge Grapplers 295x60x20 on Fuel D-251 couplers. SDHQ ABS covers. Rear under seat storage. Body mount rebuild. Color matched mirrors, handles. Raptor step bars.
    What skid plate do you have up front?
     
  3. Jul 25, 2018 at 1:41 PM
    #873
    BlueBottle

    BlueBottle not a PRO

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  4. Oct 1, 2018 at 11:09 AM
    #874
    ToyoBrady

    ToyoBrady New Member

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    I've been running into issues with my harness. Installed back in February but it's something that has been happening since March. My passenger side DRL and LED go out randomly (Turn signal works). I'm using eledobleu's original kit. I took everything apart and noticed that when I move the main wire harness that sits under the headlight it turns on and off, which is why the headlight goes out (Sometimes if I hit a bump it's enough movement to turn out). This means I have to pop hood, reach down, and move the wire again until it comes back on. It sounds like a short but I've checked the connections with no result and there are no issues with Driver side, it's been perfect. Any advice would be greatly appreciated. Hoping I don't have to spend another $100 on a new harness as I've heard eledobleu has disappeared. It looks like the new harnesses don't even need a Motocontrol unit, which is pretty nice.
     
  5. Oct 10, 2018 at 5:07 PM
    #875
    JoshuaA

    JoshuaA Canuck Member

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    If I replace the turning ambers with LEDs, do I need to install resistors?
    Use amber 7443 LEDs right?
     
  6. Oct 10, 2018 at 5:10 PM
    #876
    thomasbus337

    thomasbus337 [OP] New Member

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    I had to redo the connectors on mine. My setup still uses the Morimoto relay harness and the seals on the Morimoto 9006 female plugs were letting moisture in causing corrosion. I removed the moto plugs and replaced them with higher quality Delphi plugs
     
    JoshuaA likes this.
  7. Oct 11, 2018 at 2:15 PM
    #877
    JoshuaA

    JoshuaA Canuck Member

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    Check the connector with the single green wire which powers the passenger LED DRL. Repairing the low beam connector, a different one, I inadvertently pulled the green one I’m referring to apart because that whole side is a bit short. Previously everything worked after the repair, just no passenger DRL.

    For others:
    If only the driver LED DRL works and nothing else does, check the 15amp fuse before the Moto.

    If passenger lowbeams don’t work like mine, it’s in the connector I repaired by the light assembly that houses the black, red, white and green wire. The crimps aren’t very strong, you may need to de-pin from the connector housing and solder/crimp tight again those 4 wires for good measure.

    And if you haven’t bought one, go iHacker’s which has much less if any issues.
     
  8. Oct 29, 2018 at 7:23 PM
    #878
    16TRD

    16TRD New Member

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    Before swaping the light what setting are you guys putting on the dial inside the cab for leveling?
     
  9. Dec 10, 2018 at 1:16 PM
    #879
    Meltz

    Meltz New Member

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    20181210_123337.jpg 20181210_113042.jpg Hello all I tried searching this thread using the search but didn't find the answer. I just installed my 2018 led headlights on my 2017 tundra limited using the headlight revolution harness which appears to be a quality harness. Everything seems to be working fine but I have one problem. When I turn on the truck just the DRL LEDs are on which is how it should be. However when i put my truck into any gear the Ambers also turn on. So that the DRL LEDs and parking lights are on while driving. Does anyone know why this is? Could it be something with the 4 pin? I did swap the white and purple plug as I was told while watching an installation video from headlight revolution. Any ideas how to fix this? I just want the DRL LEDs on when driving, not the amber as well. Thanks!
     
  10. Dec 11, 2018 at 12:49 AM
    #880
    Meltz

    Meltz New Member

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    Perfect, does anyone know if this would fix my problem? My Amber factory DRLs are on all the time along with the DRL LEDs. I want to just have the DRL LEDs on, not the Amber lights. Would removing the purple from the 3 pin amber connector fix the problem, or would this cause any harm to my truck? Thank you.
     
  11. Dec 12, 2018 at 6:52 PM
    #881
    lilharv321

    lilharv321 New Member

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    Looking for some help. I purchased a set of 2018 lights and the original morimoto harness from a forum member. Everything is working but I would like the drl to dim when the headlights are on. Anyone have an easy way to hook up a relay to make this happen since I have the first gen harness.
     
  12. Dec 12, 2018 at 7:07 PM
    #882
    iHacker

    iHacker Well-Known Member

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    AAD480AF-436D-43A3-B50C-186B67EC8A82.jpg
     
  13. Dec 12, 2018 at 7:12 PM
    #883
    lilharv321

    lilharv321 New Member

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    thank you! So do I need one relay for each side or just the single relay? The drl red wire I tap into at the headlight?
     
  14. Dec 12, 2018 at 7:13 PM
    #884
    iHacker

    iHacker Well-Known Member

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    Yes PMing you the details
     
  15. Dec 12, 2018 at 7:16 PM
    #885
    lilharv321

    lilharv321 New Member

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    You are the man!!
     
  16. Dec 18, 2018 at 4:10 PM
    #886
    Norfolk757

    Norfolk757 Zionist Life

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    I’m having the same issue with my HeadlightRevolution harness. I ran the fuse tap to the fuse box and the LED DRLs are on and in full bright mode. If I remove the gray wire from the plug would the turning light stop working as wel?
     
  17. Dec 18, 2018 at 5:58 PM
    #887
    Meltz

    Meltz New Member

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    Well since no one responded I figured it out and did some research. So what you need to do it go under the dash and disconnect the THIN grey wire and the amber light will go off for DRL only but still work as normal such as blinkers and it will dim while headlights are in use. There is a couple videos on YouTube on how to do this just do a quick search.
     
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  18. Dec 19, 2018 at 3:52 AM
    #888
    Norfolk757

    Norfolk757 Zionist Life

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    Thank you @Meltz dor that information. Would this gray wire need to be hooked up to some kind of a relay or just de-pin it from the harness? I’ve looked on YouTube but could not find the right video for this just how to remove the headlights.
     
  19. Dec 19, 2018 at 8:14 AM
    #889
    Meltz

    Meltz New Member

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    No it does not need to be hooked up to anything else, just depin it but make sure you secure it with some electrical tape to prevent it from causing any problems. Here is the video I used.
    https://youtu.be/m0WBZMPKoss
     
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  20. Dec 19, 2018 at 9:11 AM
    #890
    Norfolk757

    Norfolk757 Zionist Life

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    Thanks again! This really helps.
     
  21. Apr 4, 2019 at 2:54 PM
    #891
    MartyWI

    MartyWI New Member

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    Black KMC Rims Black Horse step bars Xtang 2.0 Tri-fold Cover 2018 LED Headlights (ordered 11/17)
    I also did the LED upgrade on my ‘17 Limited Crewmax Tundra using iHackers harness and the Morimotto Control harness and have had nothing but problems since putting it in. The first controller cracked the first cold WI night. They sent me a new one under warranty. I have been having problems on/off for 7 months with the driver’s side low beam working at complete randomness. My Toyata Dealership tested it and said that it should be working but pointed out the flashing led in the corner. I finally sent some videos to The Retrofit Store and have been working with Jimmy to resolve my issue. I decided I would do the Retrofits Stores plug & play. Jimmy gave me a sweet deal & I installed the connections very easily last night and the headlights work just fine. The only problem was he didn’t send the LED DRL wire connection so that is in the mail today but my truck is still apart. Lol

    iHacker made up a nice wire harness but for whatever reason my issues have become such a pain that I ripped all that out and am doing the simple Plug/Play LED lights just like my buddy did in his 2016 with no issues.
     
  22. Apr 4, 2019 at 3:24 PM
    #892
    iHacker

    iHacker Well-Known Member

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    I’m sorry for the inconvenience, some people contacted me having similar problems and after some troubleshooting they decided to ditch the Motocontrol, not sure why some fail prematurely. I had my Motocontrol first powering a set of Retrofits in my truck then I just kept it in my truck for the LED headlights and never let me down worked flawlessly for me 3 years then sold the retros including the Motocontrol and still working like a champ.

    My new harness do not need the Motocontrol anymore, we just used that for the first 5-6 months after the LED headlights release.
     
    Last edited: Apr 4, 2019
    Sas likes this.
  23. Apr 23, 2020 at 6:21 PM
    #893
    _SP_

    _SP_ New Member

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    does anyone have an OEM LED set they would like to sell? im on the fence about this upgrade. My 2014 OEMs work pretty good after going threw 4 sets of LEDs to find one with minimum glare and a nice cut off.
     
  24. Apr 23, 2020 at 6:28 PM
    #894
    Tundra_Dawg

    Tundra_Dawg Boss Moss

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    Get off the fence and do it. There is no comparison, and I have had both. LED bulbs in the incandescent housing help about 20% (I did this on my 2014). The OEM LED headlights are 150% better than the OEM incandescents (I have the 2019 TRD Pro headlights on my 2017). This upgrade might be the single best mod on a pre 2018 Tundra. Easily worth the cost, and the available plug and play harness makes it ridiculously easy.
     
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