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Wolo Bad Boy Horn Upgrade

Discussion in '2nd Gen. Tacomas (2005-2015)' started by megillet, Jun 30, 2010.

  1. Jun 30, 2010 at 9:03 PM
    #1
    megillet

    megillet [OP] Resident Badass

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    So I had this extra horn laying around (couldn't find a place to fit it on my motorcycle), so decided to put it in the Taco.

    The following is an FYI, I do not take responsibility for you if you attempt this and are not successful or break your vehicle. I have lots of experience doing things like this, so please do not attempt if you are not comfortable with anything described.

    First, I painted the shiny parts black.

    While waiting for paint to dry, took off OEM horns. Saved metal straps to mount new horn. Stacked all four together, drilled a larger hole, and was good to go.

    Ran new ground wire in thicker gauge from fenderwall near battery to horn. Took the time to add it to the OEM harness, and follows the same path as the positive wire, just comes out before the fuse box with some other grounds, and attaches to fenderwall.
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    Next, to upgrade the stock wiring in the fuse box to add a larger fuse without smoking the stock wiring. This horn will blow through the standard 10 amp fuse in a few seconds (don't ask how I know). The instructions call for a 20 amp fuse to be added in line, along with a supplied relay (more on that in a minute).

    Take out battery. Unplug connectors around fuse box to create more room to work. The only one I'm going to show you is the one for the ABS sensor (don't want to break that one for sure).
    [​IMG]
    [​IMG]

    You want to push towards the arrow and it will come out. It is spring loaded to keep it attached. The red X will stay while the part with the red arrow slides.

    [​IMG]
    [​IMG]
    Next we want to take the fuse box out of its shell. First, un-clip the side panel on the side closest to the engine (there are two tabs, one on each side).

    [​IMG]
    [​IMG]
    It slides out, and you can disconnect the two plugs also.
    [​IMG]
    [​IMG]

    Remove positive battery lead, and other wire clip.

    [​IMG]

    Next, you want to use a small flat blade screwdriver to work the clips that hold the bottom of the fuse box to the fuse box itself. There are five clips (pictures are with the bottom shell removed so you can see the clips):
    Two on the engine side.
    [​IMG]
    [​IMG]

    One on the windshield side.

    [​IMG]
    [​IMG]
    Two on the fender side.

    [​IMG]
    [​IMG]
    I found that if I started with the two near the engine, I could pry the shell off enough to stick a punch in there to keep it from clipping back together. Then I could un-clip the two on the fender side, and hold one corner apart while I un-clipped the 5th one.
    Earlier I mentioned that the instructions call for a relay. Conveniently enough, there is a relay box attached to the fuse box which you can un-clip when you flip the fuse box upside down.

    [​IMG]
    [​IMG]
    The relay even fits in the slots (loosely without spade terminals in there though).

    [​IMG]
    [​IMG]
    So I was going to add wiring to go from the fuse to the relay in the relay box, but when tracing the wires for the original fuse, found out they go to a relay on the fuse block already. Some internet searching turns up that it is the same specs as the one supplied with my horn anyways. Luckily, this means that we only need to upgrade the wiring from the stock relay to the fuse to be able to add a 20 amp fuse. If you are thinking at this point that I'm crazy, and that the relay or fuse block can't take the extra load, you're wrong. The fuse directly next to the original horn fuse is a 20 amp, and following its larger wire traces it to another relay, with exactly the same part number as the original horn relay. Here is a picture of the wiring we need to upgrade (white with green, the one my fingernail is almost touching).

    [​IMG]
    [​IMG]
    So, carefully use a small pick to un-clip the spade terminals for the relay (remove the relay from the other side first, fuse too), and gently pull the wire out. Do the same for the wire leading to the fuse. Two arrows shown, plus follow the third to the other end.
    This is what you will have in your hand:

    [​IMG]
    [​IMG]
    From left to right: relay, relay and fuse connections. The two relay spade terminals are two different sizes, so you can't connect them incorrectly.
    So next I just carefully took off the wire that was there, and soldered thicker wire on. The crimps from the factory are super strong, and I wasn't able to undo them, but I was able to solder right on top of them, and re-crimp the end part and finish it off with some heat shrink tubing.

    [​IMG]
    [​IMG]
    So, from here, just clip it back in place, and carefully re-assemble everything. Pop in a 20 amp fuse, and let her rip.

    [​IMG]

    I have tested it for 20 to 30 seconds straight several times; no more blown fuses, and no smoking wires from the fuse box.

    Best part is that the horn now has two wires (one + one -) for hookup instead of the standard one, which should make changing horns in the future plug and play (Hella, etc.)
     
  2. Jun 30, 2010 at 9:07 PM
    #2
    lookylookitzadam

    lookylookitzadam Retrofit Club!

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    Not sure if its my computer, but the pictures dont work
     
  3. Jun 30, 2010 at 9:13 PM
    #3
    mntbiker2008

    mntbiker2008 First I derp.. then I herp

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    x2

    im stupid...
    i need pics. lol
     
  4. Jun 30, 2010 at 9:17 PM
    #4
    megillet

    megillet [OP] Resident Badass

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    Working on it; thought I had them, they didn't work. I'll try again tomorrow. I don't know why doesn't work...
     
  5. Jun 30, 2010 at 9:38 PM
    #5
    lookylookitzadam

    lookylookitzadam Retrofit Club!

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    make sure your friends neighbor isn't around :D

    JK, (ps. did anything happen with that?)
     
  6. Jun 30, 2010 at 9:42 PM
    #6
    Blue

    Blue You're my boy blue

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    Im am jealous of your horns :(
     
  7. Jun 30, 2010 at 9:42 PM
    #7
    lookylookitzadam

    lookylookitzadam Retrofit Club!

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    :eek: 5 gallons = long honk
     
  8. Jul 1, 2010 at 5:52 AM
    #8
    KPT

    KPT sees what you did there.

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    :popcorn: subscribed for pics and a sound clip.
     
  9. Jul 1, 2010 at 6:42 PM
    #9
    megillet

    megillet [OP] Resident Badass

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    Updated with working pictures; will try to go grab a sound clip in a minute.
     
  10. Jul 1, 2010 at 6:54 PM
    #10
    Cape Codder

    Cape Codder Native Son

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    I'm Listenin'
     
  11. Jul 1, 2010 at 8:43 PM
    #11
    megillet

    megillet [OP] Resident Badass

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    Attached, long burst, and a couple beeps with the panic on the remote.
     

    Attached Files:

  12. Jul 1, 2010 at 8:51 PM
    #12
    Blue

    Blue You're my boy blue

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    sounds good :thumbsup:
     
  13. Jul 2, 2010 at 12:13 PM
    #13
    Cape Codder

    Cape Codder Native Son

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    SOS Concepts Sliders waiting for POR-15 Rust Abatement (Spring 2016), OEM Silver Tube Steps 'til then OME 2.5" Suspension w/885 Coils & Dakars / LR UCA's w/SpecRide Bushings / Lifetime Alignment Wheeler's "Super Bump" Bump Stops Front & Rear / OME Carrier Bearing Drop / 2.5° Axle Shims (Eliminated Vibration) Moog Greaseable LCA Cam Bolts / ToyTech Sway Bar Relocate Kit / Stainless Steel Extended Brake Lines (Front & Rear) TIRES - LT275/70R17 (32.2") Firestone Destination A/T's (and Matching Spare) mounted on (5) 17”x8” (4.5” BS) Machined Aluminum Alloy, with Light Gunmetal Accents, Konig SixShooter Wheels with Hofmann Anthracite Adhesive Power Weights / McGard 65002 Chrome SplineDrive Lug Nuts / Cloned Schraeder EZ Sensor 33000 TPMS SNOW TIRES - Bridgestone Blizzak DM-V1 - P255/75-17 (32.1") mounted on Stock TRD Sport Wheels (5.5” BS) w/BORA 1" Wheel Spacers (to = 4.5” BS), Wheels Locks & OEM Lug Nuts Wheel Master 36" Stainless Steel Mesh Spare Tire Inflator/Checker attached to Rear Bumper / Spare Tire Lock TRD Skid Plate / Husky Mud Flaps / Redline Tuning Hood Struts / UltraGauge / Frame Hole Plugs / OEM Chrome Exhaust Tip Salex SLX102 - '05-'13 Tacoma GloveBox & Console Organizers Combo Set / GRID-IT (Console Cover Organizer) Color Matched SATOSHI Grill w/ Individual Letters Toyota Emblem (from ‘86 Toyota Land Cruiser) Hella Fogs on Elusive Elements Light Bar mounted behind Grill / Relocated Horns & Outside Temperature Sensor SilverStar zXe Headlights / SilverStar Fogs / Upper & Lower Color Matched Eyelids / LED's @ Dome, Maps, Lic Plate & 3rd Brake / 866 Foglight Lamps for Back-Up Lights WeatherTech Headlight & Foglight Protection / AutoBahnd RoadBlock (3M) Paint Protection System on Front End & Tailgate Avid Hitch Step Color Match Powdercoated / Avid LightBar Color Match Powdercoated / DIY Front Plate Holder mounted on AVID Light Bar (NO Bumper Holes) Emblems DeBadged / CBoy808's Silver OME EMU, Medium Gray Mall Rated, TRD Skid & Matte Black US Flag Decals SockMonkey Medium Gray Shadow Only Bedside, Door, Hood Scoop & Tailgate Decals DeBadged Leer 100LX Cap w/ Adventure Pkg including Thule 48” & 60” AeroBar Locking Removable Racks, Removable Front Window & Rear Door Remote Lock Charcoal/Blk Wet Okoles (front & rear) w/Front Seat Back Waterproof Zippered Pockets, Front Pistol Pockets & Seat Heaters / Drop Stop Seat Wedge Fillers 6 CD Changer w/SubWoofer (TRD Sport OEM) / BluLogic Hands Free (Blue Tooth) / Lutron Maestro Pico Remote Control for Driveway Floods Pro-Fit & Pro-Clip Device Holders for Cell Phone & GPS / Beltronics RX 65 Blue Detector / Garmin 885T GPS 30% Tint on Driver/Passenger Windows / WeatherTech Dark Front Window Deflectors / AutoMate AM-7 Alarm w/Remote Start WeatherTech FloorLiners (Front & Rear) / WeatherTech All Weather Mats (Over Front Liners) TRD "Offroad" Front Recovery Hook (Color Matched) / 2" x 30' & 3" x 30' Recovery Straps ELITE OffRoad 2" Receiver Hitch Shackle / Daystar Black Shackle Isolator / LifeLong Locks Class 5 Locking Hitch Pin Viair 00088 88P Portable Air Compressor / Rockford 12,000mah, 200/400 Amp, Portable Power Source & Mini Jump Starter Pop&Lock PL5305 Manual Tailgate Lock w/Color Matched Handle / Driver's Door Keytechniques Keyhole Cover OEM Bed Mat / 4 Extra Military Issue Bed "D" Rings Attached with Bed Bolts / 4 Extra Bed Rail Tiedowns & 2 Mini Tiedowns H3R Performance Halguard Halotron® 1 (Clean Agent) - HG250C 2.5lb Chrome Fire Extinguisher and Extreme Duty Quick Release Bracket (Mounted in Bed) H3R Performance Halguard Halotron® 1 (Clean Agent) - HG100C 1.4lb Chrome Fire Extinguisher (In Cab Back Door Pocket) H3R Performance MX500R - 5lb Dry Chemical Fire Extinguisher w/ Vehicle Mount (On Cab Back Floor, Not Yet Mounted in Bed) ResQMe GB0-RQMTWIN-O Orange Keychain Version of the Original LifeHammer (Hanging Within Reach in Cab) FogLight Anytime / Differential Breather / A/C Condensate Drain / Tailgate Hoseclamp Anti-Theft Mods Toyota Extra Care Platinum Vehicle Service Agreement (VSA) – 8 Year / 125,000 Miles TSB's: Transmission TSB / Blower Motor TSB / Steering Intermediate Shaft Bushing TSB 90L Accelerator Pedal D0L Recall / Driver & Passenger Seat Belts Recall / Inspect Wheels & Tires "BOB" Recall The “TW EMPTY UR WALLET MOD” and a Pile of Stuff Waitin' for Install
  14. Jun 13, 2015 at 3:18 PM
    #14
    kuhnsmith

    kuhnsmith Member

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    Is there an easier way to do this (like connecting the stock wires to the Wolo relay and then to the horn? Not as elegant as this install, of course, but I'm lazy.
     
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