The pictures weren't attached, Dave.
I think the attached diagram is what you're looking for.
Someone kindly sent it to me when I was wiring the coils, so I'll pass it
on.
You will need to split the 12v lead in the harness if you're going to drive
leading and trailing separately. I ended up disassembling the harness and
removing a lot of the excess wire.
At Ed's recommendation I had my coil wires made up by Magnacore. Very
helpful people. I used different color connectors for leading and trailing.
This helps you avoid cross connection mistakes when changing plugs.
Regards,
John