get your self over to www.kaklub.co.uk/forums or
www.myka.org

either will fill you wth 100's of reasons....

can you be more specific with what's going wrong...

KA's have a few issues with the TPS and the ICV they just need to be taken out and cleaned, there's a guide on www.kaklub.co.uk

As for the blowing fuses, no real idea off the top of my head, i'm assuming the car is standard, but like Zippy said, may be the live wire although.. not sure how.... it splits into 2 i think, one goes to the altenator other to the fuse box ( i think) wouldn't know what to suggest... but one of those 2 sites will be able to help