Right, so I am now a bit more clued up and having followed the advice, I checked through each circuit. Following the power wire from the switch, it splits into four, three go forward, fuse box, back of the dash and ignition circuit, the other goes rearward. I wired each one separately and rigged a 30 amp fuse, then turned the ignition on. There were no issues at the front when wired separate, in fact when I wired all of the circuits together, the car starts and runs and all seems fine. When I reconnected the lot, my fuse popped. Checking the rearward loom carefully, I have found a lot of damage going towards the rear of the car. Further along, there is also evidence of burnt wires in the boot where the loom comes through by the back seats. From this I surmise that my problem was in that circuit somewhere. The damage is such that it looks like it will be easier to get a complete rear loom from a breaker and splice it in, effectively re-wiring the rear end.
Two questions?
Does my logic seem sound?
Anyone breaking one and have the rear loom available?
Cheers,
Mike