Ekco AC18 HT Unit - using?

[SurreyNick]

Could have sworn I got the drawing right. But it's easy to make a mistake and I didn't open up the 4+4 Electrolytic. As it only had one neg and two live wires going in I assumed it had to be wired in parallel.
I have attached a few high res pics which show the wiring. Perhaps you can spot where I have gone wrong.