dual bulb vintage Light help

[MrScott]

Hi, i'm trying to work out what i need to purchase to replace the internals of a vintage lamp with 2 bulbs and a footwitch. It's one of those german style lava lamps with a large shade and it has a bulb at the top and also a bulb in the base, it has a footswitch that cycles between, top, bottom, both and off. I have taken a few pictures of the internal electrics but don't know where to start looking for a replacement. Is there a modern drop in replacement for this? I assume i use the existing metal rod and replace the wiring somehow, I've googled and searched several times for a replacement but can't seem to find anything with the dual bulb/footswitch combo, Any help would be greatly appreciated. Regards. Scott.