Yeah a guy at work said I should call the NRMA to check with a multimeter for me. I managed to get to work with a jump pack (didn't work straight away though, took a few goes) so I'll see how it goes when I try to get home lol
What happened originally is that I used the high beam and the car went into limp mode (yes, warning lights on the dash, like when the coil packs go)... no power at all, even the stereo cut out. Got home, car only JUST started the next day, and then wouldn't start after work but a jump start got it going.
That was last week and it's been fine all week (I haven't touched the high beams, been too scared). Then today..... nothing