ph1 dturbo not starting - urgent help required

[rickye]

figured id bring this thread back up

its blowing fuse 12 everytime i turn the key now, fine on the first click, but on second click it blows the fuse
heater light still comes on, as do all my normal warning lights

it stopped as i came off a roundabout last night, just stopped dead, had to bridge the starter to get it going so i could get home

any ideas, i think its a short somewhere in the wiring, but i dont know where to start looking, ive tried the dim dip relay, resistor, reverse light sensor, oil pressure sensor, both big wires off the starter, stop solinoid disconnected, all at the same time and it still blows the fuse, outa ignorance put in a bigger fuse and it blew it straight away aswell
any help appreciated, really frying my head and need the car for work tomorrow