1999 Holden Vectra Electrical Fault - Multiple Things.

Hi I just recently Payed $1700 to get 8 Bent valves replaced and a Water Pump Replaced. I was told the water pump leak on the timing belt made it lose fall off and bend valves.. Also along witht he bent valves was the wipers not working, remote central locking not working, tachmeter and speedometer not working. I am baffled. But everytime I put a new fuse in for wipers and turn car on it blows. help!