I've just bought several sets of Low Voltage Halogen downlight kits. I want to place one lamp where there is an existing light fitting, connected to a ceiling rose. Do I connect the Earth and Neutral from the transformer to the ceiling rose (as you would for a standard light fitting) and then push this into the space above the ceiling? Is this safe? Or, do I remove the ceiling rose and wire the transformer up to a new junction box that also accepts the switch cable and 2 mains circuit cables? I reckon I'd have to cut a slot and push the ceiling rose through this into the gap otherwise the hole will be too big for the recessed light. Would that be correct? And finally, how far should any insulation be from the lamps and transformer? I read somewhere that I might need a fire shroud! Any advice would be much appreciated. The instructions on these things always assume you can lift up floorboards, etc (I have chipboard under my floors!) and that you have fantastic access to the gaps beween ceiling and floor! Cheers.