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Illuminated DPDT Switch

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Discussion in 'General Electronics Discussion' started by Krisso69, Apr 6, 2018.

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  1. Apr 6, 2018 #1
    Krisso69

    Krisso69

    3
    1
    Apr 6, 2018
    Hi All,

    Im wiring up a camper trailer and trying to install two switches to control one light. After research, I learnt I will need two SPDT switches. I couldn't find the right style SPDT switch, however, I managed to get my hands on the correct style DPDT switch. My thinking is I will only need to use one pole for it to work the same as a SPDT switch.
    I managed to wire the circuit correctly in order to control the light from both switches, however, I can not figure out how to get the switches to illuminate or if its even possible in this configuration. I have attached a schematic of how it is currently wired and a link to the switches Im using.
    Im hoping someone can kindly point me in the right direction to get these switches illuminated.

    Thanks so much.

    Kris.

    https://www.jaycar.com.au/round-ip65-rated-rocker-switch-dpdt-250vac-10a/p/SK0967
    dpdt_illuminated_diagram.jpg
     
    hevans1944 likes this.
  2. Apr 6, 2018 #2
    kellys_eye

    kellys_eye

    4,275
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    Jun 25, 2010
    Connect the battery negative(s) to the spare 'middle' contact on both switches.
     
    hevans1944 likes this.
  3. Apr 6, 2018 #3
    Krisso69

    Krisso69

    3
    1
    Apr 6, 2018
    Sorry, I should’ve mentioned I already tried connecting negative from battery to both spare middle pins on other side. That didn’t work
     
  4. Apr 6, 2018 #4
    AnalogKid

    AnalogKid

    2,393
    665
    Jun 10, 2015
    Part number for switch, link to datasheet, photos ,,,,,,,anything?
     
  5. Apr 6, 2018 #5
    hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    That should have worked.

    Polarity is important for LED illumination:

    upload_2018-4-6_12-47-3.png

    However, if you connected battery negative to the 2b terminal on both switches, it is possible the 12 V battery doesn't provide enough voltage to "light up" the LED. The switch contacts are rated from 14 V DC up to 250 VDC. Given the possibility that the switch would be used at 250 V DC, perhaps the built-in LED current-limiting resistor is a wee bit too large in value.

    @AnalogKid: the Jaycar Electronics website the OP linked to in post #1 has a link to a one page PDF datasheet for the switch. I have included that PDF with this post.
     

    Attached Files:

    davenn likes this.
  6. Apr 7, 2018 #6
    Krisso69

    Krisso69

    3
    1
    Apr 6, 2018
    Hmmm I think I’ll put it down to the resistor. Not to worry, I can do without the switch LED. Thanks for your help!!
     
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