I am trying to recreate the lights in this video (starting around 15:12) Motel Sign Vector Design in Illustrator CC I Sketch Station - YouTube
But I have no idea how the designer did the yellow/black gradient. I think they’re not showing a step beforehands. And because I don’t know how tthey got the gradient, I am unable to follow the next steps.
Are you referring to the radial fill on the circle?
yes, the fill that has the yellow round shape with the black around it.