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Horn and dome lights keep blowing fuse

Discussion in '2nd Gen Tundras (2007-2013)' started by Dollfinfan75, Feb 14, 2020.

  1. Feb 14, 2020 at 9:44 AM
    #1
    Dollfinfan75

    Dollfinfan75 [OP] New Member

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    Bill
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    2011 limited tundra
    Trailer brakes
    Recently my horn/ dome lights started only working intermittently one day and it started blowing the 7.5 amp fuse under the hood. Some days it'd last a week some days 1 hour, now it pops immediately. It's only driven on the weekends to pull my boat to the lake, 90,000 miles on the truck, no modifications except trailer brakes 3 years ago, other than that nothing else has been done. In a moment of irrational thinking I put a 25 amp fuse in the slot and it worked for a month but one day I noticed a burning smell from my upper dome lights area. I jumped out and pulled the fuse and haven't touched it since, now the nagging of my wife has forced me to either fix it or trader it in but I'm too cheap to get rid of a great truck for practically no reason. Any ideas or suggestions would be great. Thanks Bil V
     
    Last edited: Feb 14, 2020
  2. Feb 14, 2020 at 10:12 AM
    #2
    Zebruaj

    Zebruaj New Member

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    It's shorting out somewhere. Got any rodent problems?
     
  3. Feb 14, 2020 at 10:14 AM
    #3
    NewImprovedRon

    NewImprovedRon Hey! Get off my grass!

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    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    90,000 mile trip? Never replace a fuse with a larger capacity fuse!! As you found out, you will overload the circuit and potentially burn your truck up! Your blown fuses are trying to tell you something and that is that there is a short somewhere in the circuit. Invest the time to run the short down before you burn down your ride.
     
    15whtrd and Dollfinfan75 [OP] like this.
  4. Feb 14, 2020 at 10:27 AM
    #4
    Dollfinfan75

    Dollfinfan75 [OP] New Member

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    Trailer brakes
    None that I know of
     
  5. Feb 14, 2020 at 10:28 AM
    #5
    Dollfinfan75

    Dollfinfan75 [OP] New Member

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    Trailer brakes
    None that I know of
     
  6. Feb 14, 2020 at 10:32 AM
    #6
    15whtrd

    15whtrd Mr. Blonde

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    TRD Pro suspension, +2 Coachbuilder shackles, 2015 TRD Pro headlights, 20% ceramic tinted windows, clear ceramic tinted front windshield, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats front and rear, rear seat fold down mod, DNA hard trifold tonneau cover, Linex with uv protection, TRD rear swaybar, TRD center caps, TRD Pro grille insert with color matching surround and bulge, TRD PRO headlights, aluminum oil filter canister, Real truck tailgate seal, Pop-n-lock tailgate lock actuator, rear diff breather relocate, RCI front skid plate. 275/70 R18 BFG KO2s
    I would check all the wiring to your trailer brakes and make sure it’s not grounding out on something. Also, when it blows the fuse, is it when you’re turning the wheel? Possible spiral cable/clock spring. I’m on a roll today, LOL second time I’ve brought that part up.
     
    NewImprovedRon likes this.
  7. Feb 14, 2020 at 11:10 AM
    #7
    NewImprovedRon

    NewImprovedRon Hey! Get off my grass!

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    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    LOL! :rofl::rofl:

    Its like me and fuses today!
     
    15whtrd likes this.
  8. Feb 16, 2020 at 12:12 PM
    #8
    bleach

    bleach MEME Fiend

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    Sometimes a bad horn will blow fuses. I've had that happen on a Ford. I'm not sure yet what brand are used on Toyotas but they look similar to the ones on a Ford.
     

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