Dev block lights how to use them

[Fanatical_Meat]

I want to build a bunker in creative mode, all the dev blocks with lights do no light in game when placed, I have tried the lights that are obviously on and the ones that are off.

What am I doing wrong?
 

Ideally I’d like the red light to be on and red, a flickering light would be great if possible

[jk958]

target the light & hold e key.

[Telric]

You can only turn the POI lights on and off in the prefab editor. There is no way in vanilla to turn them on in a survival world. You'll have to use the player craftable lights and hook them to generators and all that.

[ognivo777]

You can find already lighted source in world and copy it with admin tool.