1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Repurpose Qi Switch for behind dash usb

Discussion in '3rd Gen. Tacomas (2016-2023)' started by BBQtaco74, Dec 29, 2019.

  1. Dec 29, 2019 at 7:57 PM
    #1
    BBQtaco74

    BBQtaco74 [OP] Member

    Joined:
    Nov 17, 2019
    Member:
    #310986
    Messages:
    20
    Gender:
    Male
    First Name:
    Caylor
    Vehicle:
    TRD Off-road
    Hey!

    I’m going to be installing a USB behind my dash. I was thinking about wiring my usb to the Qi switch for the on/off toggle and for its power. The plan is to make the charging pad non functional. The UBS has 2 wires. I’m little confused where those wires would connect because the Qi pad has more than 2 wires. Your guidance would be appreciated!
     
  2. Dec 29, 2019 at 8:27 PM
    #2
    Norsemanvike

    Norsemanvike Well-Known Member

    Joined:
    Feb 15, 2018
    Member:
    #244562
    Messages:
    5,210
    Gender:
    Male
    Escondido, CA
    Vehicle:
    '18 Sport 4x4, DblCb, ShBd, BBP
    If you figure this out, I'll bet you could create a kit for this and start selling it.
     
    Skydvrr likes this.
  3. Dec 29, 2019 at 8:30 PM
    #3
    BBQtaco74

    BBQtaco74 [OP] Member

    Joined:
    Nov 17, 2019
    Member:
    #310986
    Messages:
    20
    Gender:
    Male
    First Name:
    Caylor
    Vehicle:
    TRD Off-road
    that’s a big IF!
     
    Norsemanvike[QUOTED] likes this.
  4. Dec 29, 2019 at 8:31 PM
    #4
    El Chivo Norteño

    El Chivo Norteño Well-Known Member

    Joined:
    Dec 25, 2018
    Member:
    #276937
    Messages:
    631
    Gender:
    Male
    Central Oregon
    Vehicle:
    2020 White DCLB 4X4 Off-Road
    Or make it so you can power up a Valentine One Radar detector :thumbsup:
     
  5. Dec 29, 2019 at 8:33 PM
    #5
    Speedfreak

    Speedfreak Member in poor standing

    Joined:
    Sep 22, 2017
    Member:
    #230756
    Messages:
    4,805
    First Name:
    Dave
    Canada Eh!
    Vehicle:
    2017 Tacoma TRD Sport DCSB 6MT, Blazing Blue Pearl
    Manual Mall Crawler
    The USB should have 4 wires. 2 for power and 2 for communication. The Qi charger is not connected to the USB and not part of it.
     
  6. Dec 29, 2019 at 8:36 PM
    #6
    CAG Gonzo

    CAG Gonzo Ascendant Spaghetti

    Joined:
    Oct 25, 2018
    Member:
    #270558
    Messages:
    1,683
    Gender:
    Male
    Vehicle:
    2018 OR DCLB BarRed
    You could use a cigarette adapter with external wires and connect those to the power and ground wires of the switch. However, you'd be limited to whatever current that switch supports. I think the OEM switches only do 3A.

    But if you use a relay you can tap into a higher rated fuse and use the switch to actuate the relay.
     
  7. Dec 29, 2019 at 8:41 PM
    #7
    BBQtaco74

    BBQtaco74 [OP] Member

    Joined:
    Nov 17, 2019
    Member:
    #310986
    Messages:
    20
    Gender:
    Male
    First Name:
    Caylor
    Vehicle:
    TRD Off-road
    The USB has 2

    https://www.amazon.com/dp/B07T2YFG9M/ref=cm_sw_r_cp_api_i_W8xcEbZ3N0S2C

    The goal is to take the power from the Qi charger to power the new usb. I’d like to repurpose the Qi switch for turning the usb on/off.
     
  8. Dec 29, 2019 at 8:42 PM
    #8
    BBQtaco74

    BBQtaco74 [OP] Member

    Joined:
    Nov 17, 2019
    Member:
    #310986
    Messages:
    20
    Gender:
    Male
    First Name:
    Caylor
    Vehicle:
    TRD Off-road
    I wouldn’t be pulling power from the switch. I’d be pulling power from the Qi’s power source.
     
  9. Dec 29, 2019 at 8:49 PM
    #9
    CAG Gonzo

    CAG Gonzo Ascendant Spaghetti

    Joined:
    Oct 25, 2018
    Member:
    #270558
    Messages:
    1,683
    Gender:
    Male
    Vehicle:
    2018 OR DCLB BarRed
    Right on. Don't know how much current that draws but I know it didn't do a great job at charging my phone; I was showing about 500mA on average but that could be a limitation of the charger rather than the circuit it uses.
     
  10. Dec 29, 2019 at 8:53 PM
    #10
    BBQtaco74

    BBQtaco74 [OP] Member

    Joined:
    Nov 17, 2019
    Member:
    #310986
    Messages:
    20
    Gender:
    Male
    First Name:
    Caylor
    Vehicle:
    TRD Off-road

    I can’t remember where because I’ve been googling all evening, but I saw that it’s 12v. I think the charger isn’t very good.
     
  11. Dec 29, 2019 at 8:54 PM
    #11
    Speedfreak

    Speedfreak Member in poor standing

    Joined:
    Sep 22, 2017
    Member:
    #230756
    Messages:
    4,805
    First Name:
    Dave
    Canada Eh!
    Vehicle:
    2017 Tacoma TRD Sport DCSB 6MT, Blazing Blue Pearl
    Manual Mall Crawler
  12. Dec 29, 2019 at 9:01 PM
    #12
    CAG Gonzo

    CAG Gonzo Ascendant Spaghetti

    Joined:
    Oct 25, 2018
    Member:
    #270558
    Messages:
    1,683
    Gender:
    Male
    Vehicle:
    2018 OR DCLB BarRed
    All vehicle circuits are 12v, with some exceptions like the dimmer circuit that are negatively grounded. Unless I'm mistaken.
     
  13. Dec 29, 2019 at 9:06 PM
    #13
    calebc

    calebc Well-Known Member

    Joined:
    Oct 21, 2019
    Member:
    #308578
    Messages:
    1,056
    Not entirely true. Circuits can be stepped down. USB for example is 5v.
     
    Skydvrr likes this.
  14. Dec 29, 2019 at 9:08 PM
    #14
    BBQtaco74

    BBQtaco74 [OP] Member

    Joined:
    Nov 17, 2019
    Member:
    #310986
    Messages:
    20
    Gender:
    Male
    First Name:
    Caylor
    Vehicle:
    TRD Off-road
    thanks for the diagram. I should have included in original post. I had found this, but I’m just not really sure what wires go where.
     
  15. Dec 29, 2019 at 9:10 PM
    #15
    Skydvrr

    Skydvrr IG: @kalopsianick

    Joined:
    Sep 13, 2017
    Member:
    #229889
    Messages:
    12,647
    First Name:
    Nick
    YMH
    Vehicle:
    Black '17 OR

    Even if it's ground switched, it could still be 12v.
     
  16. Dec 29, 2019 at 9:10 PM
    #16
    Skydvrr

    Skydvrr IG: @kalopsianick

    Joined:
    Sep 13, 2017
    Member:
    #229889
    Messages:
    12,647
    First Name:
    Nick
    YMH
    Vehicle:
    Black '17 OR
  17. Dec 29, 2019 at 9:12 PM
    #17
    0xDEADBEEF

    0xDEADBEEF Trash Aficionado

    Joined:
    Mar 2, 2019
    Member:
    #285037
    Messages:
    18,820
    Vehicle:
    2000 reg cab 4x4 flatbed MT
    Looks like the switch is just an input to the wireless charger module. You should be able to rework that to switch a relay that will turn a USB charger on and off.
     
  18. Dec 29, 2019 at 9:17 PM
    #18
    CAG Gonzo

    CAG Gonzo Ascendant Spaghetti

    Joined:
    Oct 25, 2018
    Member:
    #270558
    Messages:
    1,683
    Gender:
    Male
    Vehicle:
    2018 OR DCLB BarRed
    Right, but isn't the dimmer circuit less than 12v based on the dimming setting? Also forgot that USB circuits are 5v.
     
  19. Dec 29, 2019 at 9:26 PM
    #19
    mutely

    mutely Well-Known Member

    Joined:
    Feb 15, 2017
    Member:
    #210640
    Messages:
    1,848
    Vehicle:
    TRD Pro in metallic primer
    it doesn’t look like the full power to the charging pad goes through the switch, it’s using the switch to tell it to turn on, then gets full power from a different circuit. So I’d be very dubious of running your USB PSU directly through that switch. You really should use a relay.
    If you add a relay, then run the coil of the relay blue wire, and the other side to ground, then the switch / contact side of the relay to the green wire, and the other side to the +12 on your usb psu. That should do it.
     
  20. Dec 29, 2019 at 9:32 PM
    #20
    Shellshock

    Shellshock King Shit of Turd Island

    Joined:
    Nov 21, 2015
    Member:
    #170338
    Messages:
    21,371
    Iowa
    Vehicle:
    2019 Tundra TRD PRO / 2024 GRC Circuit
    This seems like a whole lot of work when you could just replace the cig lighter with a dual usb plug or tap into the power for it and add ports wherever you want. I don’t see any point in having a switch for it..
     
    Skydvrr likes this.

Products Discussed in

To Top