Just look

Fallout-4-power-ceiling-lights, all you need is one of those dealies under power (i forget the name, you connect cables to them). connect the generator to one of those with wires and put it somewhere near the light, it'll automatically gain power, doesn't need to be directly connected via wire like some other items.. Next pick a location where you want to put some lights. these attach to walls and ceilings mostly, so just set them all up as you want. clustering them together is a good idea, as you’ll see later, but really you just want to get things hooked up how you want., the ceiling fan is a settlement object in fallout 4. the ceiling fan settlement object appears as a fan with four blades with a small light bulb in the center. it requires power to be turned on. when turned on the bulb lights up and the blades turn..

For fallout 4 on the pc, a gamefaqs message board topic titled "i can't get ceiling lights to power"., just a quick video showing how to add power to lights in fallout 4. i know this is a simple video but if it helps one person it was worth it. come hang out a....

You don't add a wire to the ceiling and wall lights. add a generator, and once running, put a light in close proximity to it. that's it. if you need it farther away you have to add a power conduit and run a wire from the generator.