Stud sizes in 7 pin connector junction box?

Maple_Geek
Maple_Geek Member Posts: 216
in Battery/Electrical & Solar
Hello, I've been trying to find this information everywhere and keep coming up empty.
I bought an Autowbrake brake controller and I want to start getting it ready this winter by installing ring crimp connectors on the end of the wires.
The only information I'm missing is, what are the sizes of the studs in the 7 pin connector junction box? Does anyone know? Looks like 1/4" to me and I'm assuming that's pretty standard.

See picture below to see what I'm looking for. Thanks!


2022 T@B 320S Boondock
2021 Toyota RAV4 TRD Off Road
Ottawa, Ontario, Canada
Instagram: new.t@bventure

Comments

  • tybladesmith
    tybladesmith Member Posts: 180
    The nut is sized at SAE #10/32 threads. Hope this helps.
    Kay and Tom - SW Wisconsin - Silver T@bernacle - 2018 T@B 320S Boondock Silver/Black trim TV, 2018 Chevy Colorado, Silver/Black trim, Duramax, TowHaul, IntelliHaul
  • Maple_Geek
    Maple_Geek Member Posts: 216
    tybladesmith said:
    The nut is sized at SAE #10/32 threads. Hope this helps.
    Thanks but what doesn't it mean in terms of ring connector size? 1/4"? 3/8"?
    2022 T@B 320S Boondock
    2021 Toyota RAV4 TRD Off Road
    Ottawa, Ontario, Canada
    Instagram: new.t@bventure
  • Horigan
    Horigan Member Posts: 891
    Below a 1/4" nut sizes switch to numbers, starting at #12 and going down from there for smaller sizes.  So the stud size is #10 with 32 threads per inch.  You'll find them in hardware stores.

    https://www.boltdepot.com/fastener-information/printable-tools/US-Nut-Size-Chart.pdf
    Rich
    2019 T@b 400
    2025 Toyota Highlander 2.4L Turbo
    Bellingham WA
  • Maple_Geek
    Maple_Geek Member Posts: 216
    Thanks @Horigan. I'm not looking for a nut size. I'm looking for the size of crimp on ring connector I should be ordering. Sorry if I wasn't clear. I think 1/4" will do.


    2022 T@B 320S Boondock
    2021 Toyota RAV4 TRD Off Road
    Ottawa, Ontario, Canada
    Instagram: new.t@bventure
  • Denny16
    Denny16 Member Posts: 5,430
    edited November 2022
    First, you need to know the wire SAE size for the cable you are going to terminate (Autobrake cable wires), which is typically 8 or 10, or a combo of the two, then you need to get a crimp on ring connector that fits a No 10 stud, typically these connectors will have a blue or yellow insulator on them )see your photo).  Here is a chart showing the choices for a no 10 stud:
    https://www.mcmaster.com/crimp-lugs/insulated-ring-terminals/for-screw-size~no-10/

    A one quarter inch ring would be too big.
    cheers
    2018 TaB400 Custom Boondock,  Jeep Gladiator truck, Northern California Coast.
  • tybladesmith
    tybladesmith Member Posts: 180
    @Maple_Geek, A ring terminal for a #10 stud would be 3/16" inside diameter - 0.190" or bigger.

    Kay and Tom - SW Wisconsin - Silver T@bernacle - 2018 T@B 320S Boondock Silver/Black trim TV, 2018 Chevy Colorado, Silver/Black trim, Duramax, TowHaul, IntelliHaul
  • geoB
    geoB Member Posts: 115
    I'm about to get an Autowbrake unit for my 400. I'm curious - how did you deal with replacing the cord (with its 7-pin female connector) with the bare wires of the Autowbrake? There needs to be some way to weatherproof the passage into the junction box.
    2020 Toyota Highlander + 2021 T@B 400 BD 
    Truckee, CA, expat, now driving out of Reno
  • elbolillo
    elbolillo Member Posts: 567
    geoB said:
    I'm about to get an Autowbrake unit for my 400. I'm curious - how did you deal with replacing the cord (with its 7-pin female connector) with the bare wires of the Autowbrake? There needs to be some way to weatherproof the passage into the junction box.
    The wire from the Autowbrake get connected directly into the junction box mounted on the frame. A waterproof grommet can be used for the hole where the wire from the Autowbrake enters.

    _____________________________________________________
    Ken / 2023 Tab 400 “La Bolita” (39,000+ miles) / 2024 Toyota Sequoia

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