Hi,

I have installed a new bathroom light. (changed from a 60w bulb to a 38w
fluorescent) I have 2 cables coming into the light each containing a red,
black and earth core.

My old light had the 2 reds connected to each other using chocolate block,
the 2 earths to an earth terminal and each black to its own terminal. If I
do the same with the new light it remains on permanently. I have swapped the
blacks around and there is no change. (The instructions with the light
states to connect the reds to live, black to neutral, and earths to earth
terminal. This just trips the breaker.)

Can you help me - what have I done wrong?
Thanks
Ian