Lighting – How to install Light Fixtures – no ground in the ceiling box

ceilinglighting

I am trying to install a lighting fixture that I bought from Ikea. The ceiling box has one black, one white, one blue, and one yellow lines (as in the photo below). But, I cannot find a ground line in the box. Can anyone explain how I can connect the ground line in the lighting fixture? Also, I would like to use a switch to turn on and off the lighting, but I'm not sure which hot wire I should use. I guess it may be blue or yellow.

Thank you!

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Best Answer

If you don't know, get an electrician. Your life and property are at stake.

I could make some educated guesses here but if you followed them, had a problem, and I found out about it, I'd feel bad.