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Wiring in third brake light for camper shell

Discussion in '1st Gen. Tacomas (1995-2004)' started by Thedoobster, Mar 9, 2022.

  1. Mar 9, 2022 at 7:15 PM
    #1
    Thedoobster

    Thedoobster [OP] Well-Known Member

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    3" Lift, 1.5" Wheel Spacers, 285/75r16 Tires
    Recently bought a truck topper for my 99 Tacoma, it wasn't in the best shape but I'm slowly fixing it up and I come to the part of wiring in a third brake light. I really don't want to tap into existing wiring on the truck, in the case that I mess up plus I want the ability to be able to completely remove everything if need be. I'm going to buy a 'Hopkins 43315 Wiring Kit' and splice into that but I need to know from someone who's done it this way what wire I need to tap into for the brake light. I can't find any wiring diagram for it on the internet.

    Screenshot_20220309-190142__01.jpg
     
  2. Mar 9, 2022 at 9:11 PM
    #2
    ztwatson

    ztwatson Well-Known Member

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    I just hooked up my camper shell brake light. Not what you're looking for, but I ran the wires into the back of the driver side rear light and used T Tap Connectors to tap into the brake light line and the ground. Extremely easy and clean this way. I definitely suggest it. Cleaner and cheaper than the route you're going. Heres a picture of the connection with the brake light before adding the ground T Tap. You can connect the ground anywhere but for whatever reason I wasn't getting a solid connection with the body of the truck so I tapped into the ground on that light. Works wonderfully.

    PXL_20220306_232557516.jpg
     
    Thedoobster[OP] likes this.
  3. Mar 9, 2022 at 9:15 PM
    #3
    Thedoobster

    Thedoobster [OP] Well-Known Member

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    Thank you, I'm more than likely still going to go with the connector because in the event I need to tow a trailer it's a good idea to have the harness already hooked up. You gave me an idea tho I'll trace the wire from there to the wires in the harness
     
  4. Mar 9, 2022 at 9:20 PM
    #4
    ztwatson

    ztwatson Well-Known Member

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    For sure. I ended up connecting it this way because I couldn't figure out the issue with my trailer light connector, was going to splice from that. Good luck!
     
  5. Mar 10, 2022 at 4:41 AM
    #5
    Bivouac

    Bivouac Well-Known Member

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    Remains to be seen I bought the tires and wheels the rest came along
    A simple multi meter will let you find the brake light wire easy

    A helper can hold the brake pedal or the pedal can be wedged.

    On the 2000 Tacoma the brake light wire Is Green/White stripe yours might be the same or not.
     
  6. Mar 10, 2022 at 5:46 AM
    #6
    frizzman

    frizzman Well-Known Member

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    OME 2.5,Tundra 17s,Falken Wildpeak AT3W hitch w/ 7-pin, ARE cap, JVC HU w/BT, HID/LED lights
    my suggestion, and this is from replacing a few of the trailer harnesses "when" they go bad (not "if"). you will keep having to re-tap if you use the trailer harness wires, or the "tail-light" wires. use the main wires before the plug and you can easily splice in a connector for the 3rd on the shell/topper/camper for disconnect when you want to remove. I used something like this

    [​IMG]

    I believe green w/ red stripe is brake and ground is always white w/ bk stripe
     
    Bivouac likes this.
  7. Mar 12, 2022 at 3:48 PM
    #7
    Thedoobster

    Thedoobster [OP] Well-Known Member

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    3" Lift, 1.5" Wheel Spacers, 285/75r16 Tires
    I ended up going with the harness method and it worked like a charm. It seems like a good quality harness but if it does go bad I'll end up having to splice the main wires. I just didn't want to cut into the original harness wires in the case that I may have accidentally messed something up and if I wanted to remove everything I could and none of the original wires would be spliced. In the long run this was more convenient for me. Thank you all for your input and personal experiences though I appreciate the help and insight.
     
  8. Mar 12, 2022 at 3:50 PM
    #8
    Thedoobster

    Thedoobster [OP] Well-Known Member

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    3" Lift, 1.5" Wheel Spacers, 285/75r16 Tires
    Also incase anyone comes across this thread looking for the same answers I was, on this harness the red wire that goes to the module is the brake wire.
     
  9. Feb 14, 2024 at 3:06 PM
    #9
    DoubleC

    DoubleC Well-Known Member

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    I like this, did you include a connector so you can easily connect/disconnect the wiring if you remove the shell?
     
  10. Feb 14, 2024 at 6:27 PM
    #10
    ztwatson

    ztwatson Well-Known Member

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    Yup I used one of these guys. No idea what type of connector it is called but just grabbed a water proof electrical connection off of Amazon.

    IMG_5409.jpg
     
    DoubleC[QUOTED] likes this.
  11. Feb 14, 2024 at 6:34 PM
    #11
    v5ensx

    v5ensx CARB legal is not CALI legal

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    Buy a flat 4 pin towing connector. Cut it in half, one end to the brake harness, other end to the shell. Cheap and can DC when needed

    Screenshot_20240214_183404_Samsung Internet.jpg
     

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