changing attenuation shape on lights

i have a car’s taillight and i allready made it glow but i want it to emmit light onto other objects. i tried to get a spot light and shange the attenuation shape but i couldn’t find where. is this even an option? if not how could i do this better?

You can adjust the Source Radius and Source Length to change the shape and if you need more than just that you can look into using IES Textures to set some more custom looks to the lights:

Thanks! i didn’t have to use IES textures but it’s a cool thing i didn’t know about!