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Bus Bar For Accessories

Discussion in 'Lighting' started by MTBTACORN, Mar 31, 2025.

  1. Mar 31, 2025 at 1:04 PM
    #1
    MTBTACORN

    MTBTACORN [OP] Well-Known Member

    Joined:
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    Ontario, Canada
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    23 Tacoma TRD Pro 21 Sportster S
    Figured I'd post this here. Currently have two light bars and will be installing some reverse pods and possibly under the hood lighting. Looking to clean up the wiring in the engine bay. I have the negative bus bar sorted but looking for guidance on the positive bus bar.

    Do I simply run a wire from the positive battery terminal and connect it to the positive bus bar then add all the positives from the accessories?

    What gauge wire from the battery top the bus bar?

    Where would be a good place for the positive bus bar? On top of fuse box? other?

    3C54248A-9A5B-4E83-AA99-C1DA51E1B412.jpg
     
  2. May 6, 2025 at 6:34 PM
    #2
    buntcake

    buntcake Well-Known Member

    Joined:
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    Booboo
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    2020 TRD OR Cement
    Dawg, don't do it like this it. This is going to make keeping track of which wires are which and where the fuses are for each accessory a giant pain, and might also create a fire hazard if you're overloading the bus bar with more amps than it's designed to handle. Don't screw it into the top of your factory fuse box and make it so water and dirt can get in there and short other things.

    Get a fuse block, like this one. It's rated for 100 amps, which might be enough for what you're doing, but it depends on the accessories you're using. Mount it to a bracket like this so that it's secure. There are lots of companies that make similar accessories and kits to make it easy. They're more expensive than your bus bars, but much more well designed for what you're doing. That way you have quick access to the fuses rather than digging through the engine bay for inline fuses for your light bars, the wiring for future accessories can be attached to the same place, and most importantly it's a safer setup.

    Next, if you're going to do your own wiring from the lightbars or other accessories, do some research into how much the amp draw is (most manufacturers have that in the product details) and how long you are going to run the wires. Here's a chart that you can use to help you know what size wires to use. More amps and longer distance = thicker wire:

    [​IMG]
     
    MTBTACORN[OP] likes this.
  3. May 6, 2025 at 9:22 PM
    #3
    MTBTACORN

    MTBTACORN [OP] Well-Known Member

    Joined:
    Mar 17, 2011
    Member:
    #53212
    Messages:
    447
    Gender:
    Male
    Ontario, Canada
    Vehicle:
    23 Tacoma TRD Pro 21 Sportster S
    Thank you, I forgot about this thread. Already done with more to come.

    IMG_6862.jpg
     
    buntcake[QUOTED] likes this.
  4. May 7, 2025 at 8:23 AM
    #4
    buntcake

    buntcake Well-Known Member

    Joined:
    Nov 14, 2016
    Member:
    #202394
    Messages:
    280
    Gender:
    Male
    First Name:
    Booboo
    Vehicle:
    2020 TRD OR Cement
    Hell yeah, that's some clean work there OP! Nicely done
     
    MTBTACORN[OP] likes this.

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