1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Easy 5 min anytime fog light relay mod DIY

Discussion in 'Lighting' started by xtyfighterx, Jan 16, 2018.

  1. Dec 28, 2018 at 8:46 PM
    #151
    bmcdds

    bmcdds New Member

    Joined:
    Aug 2, 2018
    Member:
    #17681
    Messages:
    144
    Gender:
    Male
    What happens if you ground both the headlight and DRL relays in 18-19?
     
  2. Dec 30, 2018 at 8:31 PM
    #152
    epa4wd

    epa4wd New Member

    Joined:
    Nov 24, 2017
    Member:
    #11141
    Messages:
    147
    Gender:
    Male
    First Name:
    Ed
    Then you would be grounding also the headlights to the DRL, headlight would turn on with DRLs.
     
  3. Dec 30, 2018 at 9:43 PM
    #153
    bmcdds

    bmcdds New Member

    Joined:
    Aug 2, 2018
    Member:
    #17681
    Messages:
    144
    Gender:
    Male
    Thanks, makes sense now.
     
  4. Jan 3, 2019 at 11:50 AM
    #154
    Norfolk757

    Norfolk757 Zionist Life

    Joined:
    May 8, 2018
    Member:
    #15134
    Messages:
    214
    Gender:
    Male
    First Name:
    Tom
    Norfolk, VA
    Vehicle:
    2015 White Tundra TRD
    This is the best way to do this. WOuld you happen to have a write up on how you connected to the wiring connector? can you use this button and hit the button to turn on the fogs with just the ignition on and turn them off with the ignition on?
     
    OBXTundra likes this.
  5. Jan 3, 2019 at 11:55 AM
    #155
    OBXTundra

    OBXTundra Member

    Joined:
    Aug 30, 2017
    Member:
    #9337
    Messages:
    850
    Gender:
    Male
    Vehicle:
    2010 Tundra, 5.7, 4x4, DC, FF
    JBA UCA's, Eibach/Toytec Coilovers, AAL.
    Fogs work with parking lights, low, and high. Will not work with just ignition on.

    Used a quick-tap for the illumination wire. Didn't mess with the actual harness.
     
    Norfolk757 likes this.
  6. Jan 3, 2019 at 12:01 PM
    #156
    Norfolk757

    Norfolk757 Zionist Life

    Joined:
    May 8, 2018
    Member:
    #15134
    Messages:
    214
    Gender:
    Male
    First Name:
    Tom
    Norfolk, VA
    Vehicle:
    2015 White Tundra TRD
    That makes sense.. They will only come on when the parking lights are turned on. I would like to see how I can get them to turn on without turning on the parking lights, but in retrospect, it would be best to have the parking lights on while the fogs are on so the warning sound let me know the lights are on. Nevermind, your option is the best one. So you actually ran the bent tab Neg wire to the black, the green to the negative, the blue to AC wire for the illumination of the dash, and blue to a constant positive with a fuse?
     
    OBXTundra likes this.
  7. Jan 3, 2019 at 4:53 PM
    #157
    OBXTundra

    OBXTundra Member

    Joined:
    Aug 30, 2017
    Member:
    #9337
    Messages:
    850
    Gender:
    Male
    Vehicle:
    2010 Tundra, 5.7, 4x4, DC, FF
    JBA UCA's, Eibach/Toytec Coilovers, AAL.
    -bent the tab on the fog relay.
    -ran a wire from the tab through the firewall to the switch inside the cab.
    -ran a wire from the opposite switched wire to a ground (bolt) on the dash.
    -ilumination wire just goes directly to switch.

    This will depend on the switch you get and exact wire colors/configuration. The switch is just opening and closing the ground of the relay, it is not carrying the load of the fogs themselves.
     
    Norfolk757 likes this.
  8. Jan 3, 2019 at 4:54 PM
    #158
    Norfolk757

    Norfolk757 Zionist Life

    Joined:
    May 8, 2018
    Member:
    #15134
    Messages:
    214
    Gender:
    Male
    First Name:
    Tom
    Norfolk, VA
    Vehicle:
    2015 White Tundra TRD
    Thank you again.
     
    OBXTundra likes this.
  9. Jan 3, 2019 at 5:03 PM
    #159
    ldale

    ldale New Member

    Joined:
    Feb 29, 2016
    Member:
    #2800
    Messages:
    289
    Gender:
    Male
    Txk Tx
    Vehicle:
    17' Limited Silver Sky Metalic
    Tonno Pro LowPro , TRD Sway Bar, Helwig Leaf Pack
    Nice write-up. I don't have any empty switch locations..... may have to get creative with that.
     
  10. Jan 4, 2019 at 8:23 AM
    #160
    SweetWaterSurprise

    SweetWaterSurprise New Member

    Joined:
    Sep 26, 2018
    Member:
    #19840
    Messages:
    48
    Gender:
    Male
    NJ
    Vehicle:
    Platinum
    Same here. I have a Platinum and no blanks available.
     
    ldale likes this.
  11. Jan 9, 2019 at 1:47 PM
    #161
    Ikonrat

    Ikonrat New Member

    Joined:
    Sep 3, 2018
    Member:
    #18958
    Messages:
    16
    Gender:
    Male
    Vehicle:
    2018 MGM DC SR5 TRD
    I connected the fog ground (bent out) to headlight relay ground via epa4wd's method. Works as stated above. Wondering if I connect the fog ground to headlight ground like before, but instead not bend the fog ground out and allow it to plug back into the housing. Will I be able to control fog with parking lights and still get benefits of fogs/brights with headlights on?
     
    TRON and Norfolk757 like this.
  12. Jan 10, 2019 at 3:27 PM
    #162
    Young80i

    Young80i New Member

    Joined:
    Sep 11, 2017
    Member:
    #9593
    Messages:
    288
    Gender:
    Male
    First Name:
    Kyle
    Garden Grove CA
    Vehicle:
    2015 Platinum
    Is there a way to make the stock on and off switch to work on a platinum?
     
    Norfolk757 likes this.
  13. Jan 10, 2019 at 3:44 PM
    #163
    Norfolk757

    Norfolk757 Zionist Life

    Joined:
    May 8, 2018
    Member:
    #15134
    Messages:
    214
    Gender:
    Male
    First Name:
    Tom
    Norfolk, VA
    Vehicle:
    2015 White Tundra TRD
    That would be ideal even with the just the parking lights.
     
  14. Feb 3, 2019 at 8:13 AM
    #164
    HomeDetective

    HomeDetective New Member

    Joined:
    Feb 2, 2019
    Member:
    #25498
    Messages:
    1
    Gender:
    Male
    First Name:
    Brent
    Vehicle:
    2014 DC Limited
    Too bad the fog lights don’t work with lights in Auto position. I never change mine out of the Auto position so I’ll have to try something else.
     
  15. Feb 3, 2019 at 11:48 AM
    #165
    bb_stance

    bb_stance New Member

    Joined:
    Jan 11, 2019
    Member:
    #24307
    Messages:
    2
    Gender:
    Male
    I have the 2018 headlights installed on my ‘15 platinum and did this anytime fog mod. Ive experienced that my DRLs were brighter when they were on auto mode (during the day with headlights off) vs when in parking lights only mode. Now that I’ve done the anytime mod, since the DRLs no longer are on when in auto mode, the DRLs are not as bright when I’m in parking lights only mode. I love the look of DRLs and fog both on at same time, but is it normal that my DRLs are not as bright when in parking lights only mode?
     
  16. Feb 3, 2019 at 12:44 PM
    #166
    bb_stance

    bb_stance New Member

    Joined:
    Jan 11, 2019
    Member:
    #24307
    Messages:
    2
    Gender:
    Male
    Solved! Sorry for clogging up the thread. In parking lights mode, DRLs are dimmed when parking brake is engaged. Once parking brake is released, DRLs go bright. Thank you @BlueBottle for the dim/brightness explanation! And thank you @xtyfighterx for the anytime fog mode write up - love it!
     
    xtyfighterx [OP] likes this.
  17. Feb 4, 2019 at 8:32 PM
    #167
    TRON

    TRON Is LIVE on the GRID.

    Joined:
    Jan 8, 2016
    Member:
    #2398
    Messages:
    639
    Gender:
    Male
    First Name:
    Stefen
    Chandler, Arizona
    Vehicle:
    IG: @ST3F3NS
    DUROBUMPS Use TRON10 for 10% Off & Free Shipping
    For reference 2016 Tundra, once this mod is complete I understand the fog light switch no longer works but does that mean even when you switch it on, the positive wire does not get a signal/power at all?? @xtyfighterx
     
  18. Feb 26, 2019 at 1:47 PM
    #168
    jtdunc

    jtdunc New Member

    Joined:
    Jan 28, 2019
    Member:
    #25254
    Messages:
    31
    Gender:
    Male
    Vehicle:
    2014 Tundra Double Cab - Magnetic Gray
    Has anyone done this with a 3rd gen Tundra like my 2014?

    Any other tips @OBXTundra as I'm not certain what is connected to what.
     
    Last edited: Feb 26, 2019
  19. Jun 6, 2019 at 10:15 AM
    #169
    ccress83

    ccress83 Be A Good Human

    Joined:
    Aug 20, 2016
    Member:
    #4253
    Messages:
    38
    Gender:
    Male
    First Name:
    Colin
    Cleveland Ohio
    Vehicle:
    2011 Tundra CM TRD Off-Road Limited
    AFE Dry Drop in Filter, Morimoto XB LED Fogs , LED Taillights, Morimoto D2S retro w/profile HI-Lens LED Brights, 3/1 LRO Level, Dirty Deeds 8', TRD Rear Sway Bar,
    Exactly what I did but I didnt bend the tab, just made little jumpers.
     
    xtyfighterx [OP] likes this.
  20. Jul 12, 2019 at 8:33 AM
    #170
    tundraoverland1

    tundraoverland1 New Member

    Joined:
    Jan 17, 2017
    Member:
    #5986
    Messages:
    141
    Gender:
    Male
    First Name:
    Sean
    Las Vegas
    Vehicle:
    2015 White Tundra crewmax TRD 4x4
    IG: sfarrisjr88

    What guage wire did you use to make the little jumper/ground?
     
  21. Jul 12, 2019 at 2:28 PM
    #171
    xtyfighterx

    xtyfighterx [OP] New Member

    Joined:
    Aug 28, 2016
    Member:
    #4360
    Messages:
    1,401
    Gender:
    Male
    First Name:
    Ty
    North Idaho
    Vehicle:
    2015 Black Crewmax Mid Travel
    Mid travel fox 2.5 coilovers 2.0 real shocks shims 295 70 18 trail grapplers pro accessories 32in light bar blacked out bed cover sway bar Moto metal 970 18x9
    16g I think doesn’t have to be crazy
     
  22. Jul 18, 2019 at 5:12 AM
    #172
    tapeworm

    tapeworm New Member

    Joined:
    May 5, 2019
    Member:
    #30116
    Messages:
    14
    Gender:
    Male
    First Name:
    Aaron
    Vehicle:
    2019 Cement Grey Tundra SR5
    3.5" Rough Country Lift Fuel Cleaver wheels
    Does anyone have a pic of this so I can do it on my 2019?
     
  23. Jul 18, 2019 at 2:17 PM
    #173
    Berdine

    Berdine Ironhide

    Joined:
    Aug 2, 2017
    Member:
    #8877
    Messages:
    1,540
    Gender:
    Male
    First Name:
    Frank
    Binghamton, NY
    Vehicle:
    2016 MGM Crewmax TRD

    @Ikonrat did his, not sure of the outcome
     
  24. Jul 18, 2019 at 2:24 PM
    #174
    Berdine

    Berdine Ironhide

    Joined:
    Aug 2, 2017
    Member:
    #8877
    Messages:
    1,540
    Gender:
    Male
    First Name:
    Frank
    Binghamton, NY
    Vehicle:
    2016 MGM Crewmax TRD
  25. Jul 19, 2019 at 4:15 AM
    #175
    tapeworm

    tapeworm New Member

    Joined:
    May 5, 2019
    Member:
    #30116
    Messages:
    14
    Gender:
    Male
    First Name:
    Aaron
    Vehicle:
    2019 Cement Grey Tundra SR5
    3.5" Rough Country Lift Fuel Cleaver wheels
    Berdine likes this.
  26. Jul 28, 2019 at 1:09 PM
    #176
    XDevilboiX

    XDevilboiX New Member

    Joined:
    Jul 28, 2019
    Member:
    #33819
    Messages:
    9
    Gender:
    Male
    Vehicle:
    2019 Tundra Limited TRD Off Road Silver
    Hi guys, just got my 2019 Limited CM Off road 2 days ago and been reading on how to get fogs on with drl and low beam with auto set. I traded my 2010 Tacoma in and had fogs on anytime and want the same thing with the Tundra.

    Thanks to OP for the original post. I played around with it and got it working with auto set and fogs on. Even when parking and low beam comes on, the fog stays on except for high beam. I’m happy with this as I rarely use high beam.

    What I did was connect the ground from the fog relay to the ground of the drl relay directly with a 16g wire. And that’s all it took.

    77F3186A-A3C3-4B2F-B980-581D3149A48E.jpg
     
    NewImprovedRon likes this.
  27. Sep 10, 2019 at 11:22 PM
    #177
    SicSS

    SicSS New Member

    Joined:
    Aug 21, 2019
    Member:
    #34949
    Messages:
    3
    Gender:
    Male
    Houston, Texas
    Vehicle:
    2012 Grey Tundra Crewcab
    Pro Comp 6 inch lift/Fuel Forged 20X12 wheels W/35's/ARE hard tonneau cover/AMP Research Auto running boards/TRD Exhaust/LED Fogs/LED Headlights
    I wonder if that would work on a 2015 Limited?
    I bought the girlfriend a Sequoia, and she wants her fog lights to stay on like mine (all the time), but she has the auto lights, and I do not.
    Just to verify, you jumped from the terminal closest to the front of the truck on both relays?
    Seeing if you have a pic of which ones you used?
    TIA.
     
  28. Sep 11, 2019 at 5:42 AM
    #178
    XDevilboiX

    XDevilboiX New Member

    Joined:
    Jul 28, 2019
    Member:
    #33819
    Messages:
    9
    Gender:
    Male
    Vehicle:
    2019 Tundra Limited TRD Off Road Silver
    Yes it’s the terminal closest to the front. Look at your cover for where the relay for fogs and DRL is. I’m not sure if your model year is the same.
     
  29. Sep 12, 2019 at 12:00 PM
    #179
    robz

    robz New Member

    Joined:
    Sep 3, 2019
    Member:
    #35571
    Messages:
    76
    Gender:
    Male
    First Name:
    Rob
    Vehicle:
    2015 Platinum 2WD
    Full interior LED lights. Bed cover.
    didn't know about this mod.
    Thank you OP will try it this weekend.
     

Products Discussed in

To Top