It's the Alternator

Got a call from the sparky at lunch, turns out the alternator is shagged. Unfortunately I don't have the receipt from the previous owner (apparently it's with his mate who got it for him), so as a result I'm just getting a new one put in.

So looks like Frizzbe's diagnostics were correct. Good work Frizza! ;)

Might give them a call at 4pm to see how it's traveling. Be good to get it back today. :D