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3rd Gen (2019) TRD OR bed light install correct wire to tap

Discussion in '3rd Gen. Tacomas (2016-2023)' started by RoMav9394, Mar 23, 2023.

  1. Mar 23, 2023 at 9:58 AM
    #1
    RoMav9394

    RoMav9394 [OP] Active Member

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    I have seen several posts about installing be lights that work from the cargo lamp switch but usually it's a lot of schematics with minimal explanation in dummy language. I'll post links to what I used below.

    To get bed lights to work in conjunction you need to tap into the correct negative triggered ground wire. Pull out the switch panel using a trim removal tool then remove the plug from behind the cargo lamp light. Locate the blue wire. This is your ground switch negative.
    IMG_5472.jpg IMG_5473.jpg IMG_5474.jpg IMG_5474.jpg IMG_5455.jpg IMG_5456.jpg
    Next is to run a wire from this Blue wire out through the grommet in the firewall to the engine compartment. You will connect this wire to the 85 pin (Black on my harness) which is the negative triggered ground.
    IMG_5476.jpg IMG_5479.jpg
    I chose to use a Micro 5-pin relay. Most of the micro's will be labeled 1-7 instead of the 87a labeling. You can easily use a 4-pin but this came as a 5 pack so why not.
    micro-automotive-relay-wiring.jpg IMG_5470.jpg IMG_5477.jpg


    Next connect the 30 and 86 (red and white) to an always on power source. I chose the battery.

    After this you can connect the 87 pin (Blue wire from the harness) to the positive side of your lights. The negative for the lights will go to the most convenient ground available.

    I won't go into running wires etc. but this should get you through the wiring portion.

    IMG_5463.jpg
    IMG_5464.jpg

    Relay - https://www.amazon.com/dp/B00RWV470O?ref=ppx_pop_dt_b_product_details&th=1
    Lights - https://www.amazon.com/dp/B07ZLWJZLT?ref=ppx_yo2ov_dt_b_product_details
    Trim removal tool - https://www.amazon.com/gp/product/B08ZMZH5RW?ie=UTF8

    IMG_5478.jpg
     
    Last edited: Apr 9, 2023
  2. Mar 23, 2023 at 8:02 PM
    #2
    caribe makaira

    caribe makaira Well-Known Member

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  3. Mar 25, 2023 at 2:04 PM
    #3
    RoMav9394

    RoMav9394 [OP] Active Member

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    I know the vampire clip is ugly. It’s what I had to test with. I didn’t get a picture of the final soldered version.
     
  4. Mar 25, 2023 at 2:34 PM
    #4
    caribe makaira

    caribe makaira Well-Known Member

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    Could've done this:
    upload_2023-3-25_17-33-51.jpg
    :DUnlock, De-pin:Snip:Strip:Crimp dual wires:insert:lock
     
    RoMav9394[OP] and AZ Pete like this.
  5. Mar 25, 2023 at 3:36 PM
    #5
    caribe makaira

    caribe makaira Well-Known Member

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    P.S. Hope that's a sealed relay
    upload_2023-3-25_18-36-52.jpg
     
  6. Mar 25, 2023 at 5:00 PM
    #6
    RoMav9394

    RoMav9394 [OP] Active Member

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    Supposedly it’s waterproof but for $15 for five I can spare one if not. What’s the best way to remove the wire from the clip? Never tried that before.
     
  7. Mar 25, 2023 at 5:05 PM
    #7
    RoMav9394

    RoMav9394 [OP] Active Member

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    I have limited exposure to any kind of wiring relays and tapping into existing wiring. And totally new to switches other than on off!
     
  8. Mar 25, 2023 at 5:30 PM
    #8
    caribe makaira

    caribe makaira Well-Known Member

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    The connector has a securing bar, it is lifted, NOT removed. From the opposite side of the wires on the connector it has very small indentations. That's were you insert a tiny flat tip screw driver and lift.
    While you get a 3rd hand to hold the wire with terminal to be removed, you insert a very small flat at the terminal (pin) side, and press carefully in and down. The 3rd hand would pull on the wire, removing it.
    upload_2023-3-25_20-29-14.jpg
    the TOOL can be a flat screw driver used on glasses or a needle for cord.
     
  9. Mar 25, 2023 at 6:57 PM
    #9
    RoMav9394

    RoMav9394 [OP] Active Member

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    Thanks! I’ll make sure to do a cleaner install next project.
     
  10. Mar 25, 2023 at 7:03 PM
    #10
    caribe makaira

    caribe makaira Well-Known Member

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  11. Mar 26, 2023 at 12:30 PM
    #11
    caribe makaira

    caribe makaira Well-Known Member

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    Try this:
     
    Last edited: Mar 26, 2023
  12. Mar 26, 2023 at 12:45 PM
    #12
    caribe makaira

    caribe makaira Well-Known Member

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    Or this:
    upload_2023-3-26_20-9-0.jpg
     
    Last edited: Mar 26, 2023
  13. Mar 26, 2023 at 4:36 PM
    #13
    Toycoma2021

    Toycoma2021 Well-Known Member

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    Hijack.
    @caribe makaira
    What does the tool to remove the .64mm size contacts from the connector body look like? A connector like the small ones in the under hood fuse box.
     
    RoMav9394[OP] likes this.
  14. Apr 15, 2023 at 4:42 AM
    #14
    RoMav9394

    RoMav9394 [OP] Active Member

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    I started my next project but haven’t been able to get this to work yet. I’ll keep trying. @caribe makaira any chance you could help with some footwell wiring?
     
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