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

PLOW LIGHTING FOR 2021 TUNDRA TRD

Discussion in '2.5 Gen Tundras (2014-2021)' started by mvt1542, Nov 24, 2020.

  1. Nov 24, 2020 at 2:14 PM
    #1
    mvt1542

    mvt1542 [OP] New Member

    Joined:
    Nov 24, 2020
    Member:
    #55318
    Messages:
    4
    Gender:
    Male
    I have a SnoWay 26R plow and have put it on 3 successive Tundras. It has halogen lights and when plugged into the LED lights on my 2021 TRD sport it throws a code on the dash saying headlight malfunction - see service dealer. Question - Will this damage the wiring harness or other components or is it just telling me that there's a heavier load on the wiring harness than normal? I'm searching for retro LED headlight kits from Snoway to remove the problem.
     
    Mountun Goat likes this.
  2. Nov 24, 2020 at 2:34 PM
    #2
    Festerw

    Festerw New Member

    Joined:
    May 7, 2017
    Member:
    #7600
    Messages:
    3,828
    Gender:
    Male
    Cambridge Springs, PA
    Vehicle:
    04 Tundra DC
    Get a couple relays, use the factory wiring as the triggers, and you'll be set to go.
     
  3. Nov 26, 2020 at 8:09 AM
    #3
    mvt1542

    mvt1542 [OP] New Member

    Joined:
    Nov 24, 2020
    Member:
    #55318
    Messages:
    4
    Gender:
    Male
    Thanks for the prompt reply. I'm not quite sure I follow your advice. Are the relays installed in line with the plow harness before touching the trucks factory wiring? Or under the hood from the factory wiring harness to plow?
     
    Mountun Goat likes this.
  4. Nov 26, 2020 at 8:57 AM
    #4
    Festerw

    Festerw New Member

    Joined:
    May 7, 2017
    Member:
    #7600
    Messages:
    3,828
    Gender:
    Male
    Cambridge Springs, PA
    Vehicle:
    04 Tundra DC
    I'm not endorsing this harness just using it for an example. You'd need 2, preferably matching whatever headlight connector is on the truck already since I'm guessing running it from one light wouldn't make the truck happy.
    https://www.amazon.com/Headlight-Harness-Toyota-Headlights-Problem/dp/B07B9QQMMH

    You'd take the male connector of each, plug it into the existing headlight harness

    Run the power/ground wires to the battery.

    Cut off the female headlight connectors (or leave them if they match the plow harness connectors) and splice them into the truck side of the plow harness.

    That will take the load off of the factory wiring and run it from the battery to the relays out to the plow lighting using just the factory headlight wiring to activate the relays. This would require you to unplug/replug the factory headlights when you took the plow off.

    Snoway themselves do not have an adapter yet for the LED headlight trucks, you could do it leaving everything plugged in but it requires more wiring, basically doubling up connectors running factory and plow lighting through relays and adding a switch to activate the plow lighting. Not impossible but could be frustrating if you aren't good with relay wiring
     
    Mountun Goat likes this.
  5. Nov 26, 2020 at 9:27 PM
    #5
    soobahru

    soobahru New Member

    Joined:
    Feb 21, 2015
    Member:
    #987
    Messages:
    174
    Gender:
    Male
    Vehicle:
    2015 tundra 5.7L double cab 6.5ft 2019 tundra 5.7L limited crewmax
    Is there a plow section for the forum?
     
    Mountun Goat likes this.
  6. Nov 26, 2020 at 9:34 PM
    #6
    mountainpete

    mountainpete Explore more

    Joined:
    Oct 24, 2018
    Member:
    #20928
    Messages:
    2,513
    Alberta, Canada
    Vehicle:
    2018 Cement Crewmax TRD
    Function before sparkle.
    There is Mr Plow aka @Mountun Goat
     
    Mountun Goat likes this.
  7. Nov 27, 2020 at 2:05 PM
    #7
    Mountun Goat

    Mountun Goat She baaaaaahd

    Joined:
    Feb 19, 2018
    Member:
    #13002
    Messages:
    5,788
    Gender:
    Male
    First Name:
    Dan
    EhBerta, Canadia
    Vehicle:
    It’s a Goat.
    @mountainpete :rofl:

    Mr. Plow here:hattip:

    I don’t have much input on plow lighting as mine is low enough (truck lift) I utilize headlights without issue.

    @mvt1542 i suggest swapping to led bulbs on your plow :transformer:
     
    HulkSmurf14 likes this.
  8. Dec 1, 2020 at 2:52 PM
    #8
    mvt1542

    mvt1542 [OP] New Member

    Joined:
    Nov 24, 2020
    Member:
    #55318
    Messages:
    4
    Gender:
    Male
    thats a great idea - thanks. Will see what happens
     
  9. Dec 1, 2020 at 3:11 PM
    #9
    thomasbus337

    thomasbus337 New Member

    Joined:
    Sep 2, 2017
    Member:
    #9396
    Messages:
    648
    Gender:
    Male
    Vehicle:
    2020 TRD Sport DC
    I can't speak to the plow wiring, but from researching the wiring on these LED headlights back in 2017 I can add this tidbit. There's a " status" wire in the factory 8 pin plug that monitors the headlight operation. If the headlight switch is on, but the oem headlight isn't on that's what's giving the error code
     
  10. Dec 1, 2020 at 3:23 PM
    #10
    Festerw

    Festerw New Member

    Joined:
    May 7, 2017
    Member:
    #7600
    Messages:
    3,828
    Gender:
    Male
    Cambridge Springs, PA
    Vehicle:
    04 Tundra DC
    Interesting.

    Other option would be to run the relay harness and use a 3 way switch to activate the plow high/low and only tap into the parking lights.

    So you'd use the factory headlight switch to turn on the parking lights and an auxillary switch to turn on the plow headlights.
     
  11. Dec 5, 2020 at 12:53 PM
    #11
    mvt1542

    mvt1542 [OP] New Member

    Joined:
    Nov 24, 2020
    Member:
    #55318
    Messages:
    4
    Gender:
    Male
    so the code may be all about the OEM headlights not being on and not due to an increased load on the harness at all. Thanks - will continue working the problem
     

Products Discussed in

To Top