You can probably find one online,
Or you can make one quite easily. Any non-conductive disc with a hole in it that you can fabricate with a blob of solder on the end of The Wire sticking through the hole. The Blob of solder will act as a contact for the light bulb. The spring of course goes underneath the disk.
Train Nut,
Spent a good amount of time trying to find one on-line, no luck, even considered getting it with the spring and a wire attached....
Just cut some card stock. Per my calipers, just shy of the same thickness. Unfortunately not a strong enough material. Any suggestions for what to use?
Thanks - T