how to change a ceiling light?

"Four cables coming out of the ceiling" could mean several things.
What colour is the insulation around the cables, and are they grouped together in a plastic sheath?

Adam
December 2009

You are probably in the US - search the web for wiring diagrams - the new light fixture will need Earth if it has an earth terminal and it will need Neutral - it will NOT need permanent Live - just live that comes via the switch - switched live - to turn the light on and off.

It's safer if you call in an electrician...

Good luck...

Peccavi
December 2009