I have a problem, i have recently bought a bar with 3 spotlight to replace my existing light, after reading the instructions i relised that there are 3 black wires comming out of my existing fitting when the instructions indicate that thier should be only one, i dont no if this is because i have an old fitting, but i followed the instructions clearly and when i turned the power on the lights came on, but when i turned it off the fuse wire blew and i had to replace it, can anyone tell me where i am going wrong or do u need more information...Thanks