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No trailer running lights

Discussion in 'Towing & Hauling' started by zpoulsen, Sep 3, 2022.

  1. Sep 3, 2022 at 5:35 PM
    #1
    zpoulsen

    #1
    zpoulsen [OP] -

    Joined:
    Mar 4, 2020
    Member:
    #43492
    Messages:
    20
    Gender:
    Male
    Indiana
    Vehicle:
    2016 Tundra TRD PRO
    I have an issue with my trailer running lights not working. Checked 30amp tow tail fuse and its good. I know the tow tail relay is good. Swapped with one I know works. I can pull the relay and put a jumper in on the contact side and lights on the trailer work. I have my voltage on the coil side also. From the prints I could see online the main body ECU is what fires the relay. Anyone have any issues like this?
     
    zpoulsen, Sep 3, 2022
    #1
  2. Sep 6, 2022 at 6:29 AM
    #2
    frichco228

    #2
    frichco228 Valued Member

    Joined:
    Jan 9, 2020
    Member:
    #40952
    Messages:
    5,090
    Gender:
    Male
    First Name:
    Frank
    Virginia
    Vehicle:
    2016 Crewmax 4WD, TRD Offroad
    Eibach Pro Truck Stage 2 suspension, HD RAS, 285/75-18 Nokian Outpost AT, LoPro bed cover, TRD rear sway bar, DD 10 inch exhaust, and various other goodies
    There are fuses for towing under hood and under the dash on driver side, check both areas.
     
    frichco228, Sep 6, 2022
    #2
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