My cousin is over from Spain this Friday, returning on Monday if you would like the postage just from Marbella. I only have three but they are new. You see I got the wrong ones and burnt out the first plug within a few starts so they are sooty but brand new, yours with pleasure if you want to order the fourth.
The others come with the new cables as in picture and should come with wiring instructions. You still come off the resister coil on the bulkhead but in a different way.
Easiest way to tell them apart is the old type have a much bigger head, incorporating a ceramic disc under a thumb turn. The first wire goes on top of the disc with the second coming from under it and going to the top of the second and so on.