This set of 7 boards will replace the old metal lamp sockets that are so unreliable, allowing you to easily insert 555 lamps with sockets.
You can use either LED or incandescent type.
The board set comes with standoffs and hardware.
If you need the twist sockets, they are available separately on this web site.
Installing it involves unsoldering and resoldering each wire one at a time.
A printout is included that has lamp numbers and wire colors listed to make it easier to wire up.