Ok, so I think it's fair to say that tracing the positive is probably beyond my capabilities as it basically goes right through the machine.
I think in all honesty, I will have to try and find a repair shop that is open and take it to them. I'm always keen to try and learn things, but happy to step back when I'm likely to do more damage than good haha.
Quick question: It definitely wouldn't be the spark plugs? I took these out and they were quite black...
Thanks again, Rich
