Help required pressure washer wiring i have a diagram?

Hi all, are there any sparky's out there that can look at a wiring diagram for a pressure/steam cleaner?

I purchased a diesel steam pressure washer and was told all it needed was a new swith as the old one was removed to be used else where.

The machinne is a Bradbury Psimat Europa googling bring up nothing of any use.

It's not the switch I have a problem with, there are 3 sets of mains wires going to where the switch sould be but one is 5 core and has 2 black wires as well as the usual 3 for the mains.

I have draw out the cuircuit boards on a drawing program showing the layout but im just not that technical when it comes to working out where these 2 wires should go ie live, neutral or one on each

The machine works fine and the pump motor runs and I have pressure out and when I switch to hot the burner fan comes in and it seems to be firing up as there is smoke form the burner BUT these wires are there for a reason????

If you can help and would like to see the drawing I have made in PDF format then please get in touch an and all help will be really appreciated

Kind Regards
Simon