These are a bit smaller that 194's. The 194 work in the larger 1/2" sockets also present in the cluster, but what I need are the 3/8" ones, and they take a smaller bulb. I looked on the bay, and they sell some, with suggested lamp sizes: 17 18 27 37 58 70 73 74 79 85 86 206 207 286 306 307 308 406 407 2721 WHAT TH . . .? that's quite a selection! I'll have to figure out which one is the proper one for this application.