Can someone please help? I bought a set of three 12v recessed lights for bathroom and shower form Wickes with one transformer for all three. Installed as per instructions and worked well. I then fitted an extractor fan through wall and connected it up with a three pole fused unit with a three amp fuse as this is what manufacturer requires. When I switched on lights the fan came on but the lights did not. When I turned off switch fan remained on timer. As it was late I took out fan alltogwther, connection unit, the lot and put lights back to normal but still no lights working. No switch has tripped in consumer unit, the fuse in connection unit is good and the bulbs all seem to be okay. Any ideas on what went wrong? How to fix it and prevent it happening again? Please.