I've replaced mine before. There is a bulb at the top of the assembly and a bulb at the bottom. One lights the top half, the other the bottom half. If I remember correctly, auto parts stores don't have 'em. What I cant recall is whether the buckets and assemblies both bolt to the mounting/combination bracket. It seems to me that I had to unbolt the assembly from the bracket (two allen bolts) and remove the bolt that hold the bucket on. The bucket slides right off revealing the rubber holders. If my bike were here at work, I'd have a look.