I went through 5 30a engine management fuses yesterday after going through a ford. But the last time it cut out the fuse was ok, but the car was showing same problem (only the battery light lit up and the car would turn over but not spark) Today i found that i had 12v at the fusebox without a fuse in, but 0 with one in. I got a bit of wire and connected it to the fusebox and to the positive terminal on the battery and the dash illuminated, the car started and it ran ok....for 20 minutes, where it cut out and i had the same problem again! Only this time when i put the wire back onto the positive terminal it sparked and started smoking from underneath the battery! Any ideas what my problem could be? Help would be much appreciated!