Hello Tony,
the wiring is old rubber-sheathed stuff, certainly not useable as is. AgX is correct, the aperture in the glassless neg carrier is 7.7 x 10.7mm. Lens mount is a brilliant 3-lobe bayonet lock. Surprisingly, no iris and no other ID that I can see on the lens, or fungus etc.
The lamphouse is tight-fitting. There's a small release button(?) at the back but I hesitate to put any great pressure on it, so I don't yet know what's inside. Perhaps AgX can tell us more about this brilliant piece of Teutonic engineering, the lens and how to remove the lamphouse.
In the meantime I'll shoot some close-ups and ascertain freight. We'll be heading up your way later this year, so I could bring it with us( which I couldn't do with the other enlarger we are selling - a floor standing 5x7 Devere)