How could i make a blinking light that doesnt affect the timing of the script it is running in?

I need to find a way to make a light that blinks Really Black to orange every so often, but if i do it in the script, it will pause the script to run it. How do i get around this?

There is a built in function that Roblox adds called spawn. It creates a new thread that runs separately from the other code in the script.

Basic usage would look like

spawn(function()
	while true do
		wait()
		print(5)
	end
end)

while true do
	wait()
	print(6)
end

This would constantly print out 5 and 6 together.

Instead of creating new threads as other answers suggest, you should instead put the code after your light blinking code before your light blinking code, such as turning

blinkLights()
doStuff()

to

doStuff()
blinkLights()

You should avoid creating threads that you can avoid so the thread manager has less threads to handle. If you have another infinite loop afterwards such as

while true do
	wait(1)
	doStuff()
end
while true do
	wait(1)
	doOtherStuff()
end

you can combine them to one loop, like so

while true do
	wait(1)
	doStuff()
	doOtherStuff()
end

If they have different wait times, you can turn something like

while true do
	wait(1)
	doStuff()
end
while true do
	wait(3)
	doOtherStuff()
end

to

local iteration = 1
while true do
	doStuff()
	if iteration == 3 then
		doOtherStuff()
		iteration = 1
	else
		iteration = iteration + 1
	end
	wait(1)
end

This will help your code avoid creating a lot of unneeded threads, creating a more performant script and cleaner code.