Just had another query on this one - so here's a pic of my transformer wired for 240v input.

This one is the primary tranny for "Caveman" - the other side has a 110v tap for the video monitor, so the part numbers might be different...

There are 2 separate 120v windings, 1 left / 1 right.

The red wire bottom left is active, the white at top right is the neutral. (This is the 240v input)

The loop wire is the red/white wire running diagonally... (Hooked to 120v on the right winding, COM on the left winding)

I hope this helps!