I’m wondering if I can ask for some assistance in installing a new ceiling light to an unused (blank plate)ceiling junction box. The light switch in the room has 3 unused switches.

This is the light fixture which is pretty standard. enter image description here

There is a black, white and copper wire.

When I removed the ceiling junction cap, this is where I am puzzled.

enter image description here

enter image description here

There are 6 wires capped.
2 separate whites with double wires. 1 black with double wire. 1 red double wire. 1 orange single wire 1 green multiple wires.

The orange wire is from the side hole. The red wire comes from the bottom 2 holes. 1 white comes from bottom right and middle hole. 1 white comes from bottom right and top left hole. The black comes from bottom right and top left hole. The green comes from side hole and bottom left hole.

I guess all these wires are due to the 3 switches in the room?

I first wired the fixture copper wire to the green ground screw on the mount not shown here.

Then wired the junction double black to fixture black, and 1 junction double white to the fixture white. The light turned on but won’t turn off from any of the 3 switches. Changing to the 2nd double white to fixture white resulted in the same, with light on and unable to turn off. So either whites to the fixture white is unable to allow the light to shut off.

How should I actually be wiring this so that the light turns on and off according to the switch.

I hope I explained the ceiling wires properly.

Any help is much appreciated.

  • what country are you in?
    – RadioSpace
    Dec 1, 2020 at 2:17
  • 1
    Toronto, Canada
    – Ives Chu
    Dec 1, 2020 at 2:26
  • A better picture of the celing box showing which conduit each wire comes from would be helpful.
    – bigchief
    Dec 1, 2020 at 2:33
  • 1
    Will snap another photo in daylight when I can tomorrow! Thank you!
    – Ives Chu
    Dec 1, 2020 at 2:43
  • Was there a light here previously, or was it just a blank plate?
    – FreeMan
    Dec 1, 2020 at 17:14

1 Answer 1


Do you have a non contact voltage tester? Or volt meter? I would test the single brown to see if it is switched. This may work like the single brown and single white, taking white to the white to the fixture and the brown to black the bare copper goes to the green.

Would be my first shot at it the black tape on the brown would be the hot going down to the switch the way I wire in conduit the tape is to remind me where the hot is. If you have a tester or meter I would check the brown to verify it is switched but if not make the connections with the breaker off and give it a try.

  • What about the single brown? Are there 2 switches for this fixture? With the power on toggle the switch And check both positions for the brown single wire.
    – Ed Beal
    Dec 1, 2020 at 23:25
  • I was trying to add more to the previous comment. I used a contact voltage tester and here were the results. The black is the only hot wire, when master switch was off, normal. When master was on and testing with the 3 switches: With right side switch on, black and red wire were hot. With the left side switch on, black and red wire were hot. With middle switch on, Black, red and also the single brown/orange wire were hot.
    – Ives Chu
    Dec 1, 2020 at 23:29
  • I’m surprised the white wires from the junction box were not hot with any switch. Am I correct in saying I should try the brown single wire to the white from the light fixture?
    – Ives Chu
    Dec 1, 2020 at 23:30
  • I think you were right in deducing single brown to single white, that matched with what was found from voltage test. I’ll try when there is daylight tomorrow. Thank you so much for your answer above!
    – Ives Chu
    Dec 1, 2020 at 23:46
  • Running a switch loop on white is common when nmb or Romex is used but when using conduit you have the entire rainbow, in that case only green white and gray are not used for a hot, you might get away with it but it would not be normal.
    – Ed Beal
    Dec 2, 2020 at 0:31

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