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Tapping switched 12 volts in overhead console

Discussion in 'Gen 3 Prius Audio and Electronics' started by lenjack, Jun 24, 2012.

  1. lenjack

    lenjack Active Member

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    '10 Prius 3 without navigation. I would like to access switched 12v in the console. I've taken the console down and removed the connector. Does anyone know which of the wires I need to tap into for this. Also, which wire is ground?
     
    #1 lenjack, Jun 24, 2012
  2. rrg

    rrg Active Member

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    I pulled the console down on my 2011 II and did not find the 12v switched in the light wiring.

    If you have a mirror dimmer than it should be there.
     
    #2 rrg, Jun 24, 2012
  3. gliderman

    gliderman Active Member

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    What about the shifer light? Isnt it on a 12v switched circuit?
     
    #3 gliderman, Jun 24, 2012
  4. PaJa

    PaJa Senior member

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    There is no ACC/IGN-ON +12V in the overhead console. The power for active mirror is wired through the A pillar from connectors located under the dash, driver side. The shift knob light is on when headlights are ON. Map/dome lights are powered from +BAT.
     
    #4 PaJa, Jun 25, 2012
  5. lenjack

    lenjack Active Member

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    Where then is an easily accessed swicthed 12v conection.
     
    #5 lenjack, Jun 25, 2012
  6. lenjack

    lenjack Active Member

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    Just realized that I don't need switched 12v. I need the wire in the console connector that goes on with the headlights. Anone know which wire in that harness to use?
     
    #6 lenjack, Jun 26, 2012
  7. gliderman

    gliderman Active Member

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    That would be the wire going to the ... shifter light?
     
    #7 gliderman, Jun 26, 2012
  8. PaJa

    PaJa Senior member

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    Just open the overhead console, locate the connectors, use the sharp needle as a test point through the cable isolation and measure with a DC voltmeter against some clean metal surface. When voltmeter reading is around 12-14V, you found the power. Test it at different car's mode - OFF, ACC, READY.
     
    #8 PaJa, Jun 27, 2012
  9. PaJa

    PaJa Senior member

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    I just checked the wiring diagram for map light assembly. There should be 20pin white connector U3. The green wire on pin 8 will receive +12V when headlights are on. The ground wire is white-black colored on pin 1.
     
    #9 PaJa, Jun 28, 2012
  10. mgb4tim

    mgb4tim Noob

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    additionally, you can use one of the wires heading for the vanity lights for constant power, for things like Homelink rear-view mirrors. I did this instead of pulling the a-piller cover. these wires were easier to tap than the short cable I had for the overhead console lighting.
     
    #10 mgb4tim, Jun 28, 2012
  11. lenjack

    lenjack Active Member

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    Many thanks. I am also led to believe pin 20 is also 12v. Are you lookin from the connector side or the wire side?
     
    #11 lenjack, Jun 28, 2012
  12. PaJa

    PaJa Senior member

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    Yes, pin20 is +BAT, pin11 is controlled by door's switches.

    [​IMG]
     
    #12 PaJa, Jun 29, 2012
  13. lenjack

    lenjack Active Member

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    I very much appreciate your help, but again, I'm not clear on which side of the connector I see in the diagram. I'm guessing that I'm looking at the wire side. Of course, I suppose I could tell from the wire colors.
     
    #13 lenjack, Jun 29, 2012
  14. gliderman

    gliderman Active Member

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    When messing with electrical parts, you also need a multimeter. That will confirm the output of the power you need.
     
    #14 gliderman, Jun 29, 2012
  15. lenjack

    lenjack Active Member

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    I have one.
     
    #15 lenjack, Jun 29, 2012
  16. PaJa

    PaJa Senior member

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    The diagram is from te pin side, from the wire side it is numbered right-to-left.
     
    #16 PaJa, Jul 2, 2012
  17. Wraiththe

    Wraiththe Member

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    I dont get it, for a dash cam you want a wire powered when the ignition is on.
     
    #17 Wraiththe, May 10, 2018
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