Removed Ceiling rose as per instruction
New light has a 4 way terminal block with light wired to block as Live , Neutral, Earth , Spare.
There are 2 cables from ceiling , one the Mains , other is switch - both standard 3 core.
I wired the mains cable to the terminal block, matching Live , Neutral, Earth
When I wire the cable from switch on same matching , it blows fuse.
Advice would be apprecaited.