Wiring a 3 bulb chandelier any ideas?

Hello everyone i have just replaced my old chandelier with a new 3 bulb Chandelier... the problem is when i switch my fuse box back on the chandelier stays on even when i go to switch the light switch off the chandelier still stays on.. its only until i turn the fuse box off from the main the chandelier will turn off help any ideas what have done wrong with the wiring???? thanks