Can anyone help me, I've tried to wire up a light today and I've lost all power to the general lighting in the house!

I re wired one light previously, reading on forums I had to set up the 3 cables as all red together in a box, 2 black cables to blue and the one black cable (switch) to the brown terminal. Everything worked fine.

I've tried to do the same today and when I tried the light the circuit breaker went. I undid the wired and now none of the lights in the house work.

Do I need to re wire the 3 white cables together or have I completely screwed all of our lighting in the house???

Can anyone help me, I've tried to wire up a light today and I've lost all power to the general lighting in the house!

I re wired one light previously, reading on forums I had to set up the 3 cables as all red together in a box, 2 black cables to blue and the one black cable (switch) to the brown terminal. Everything worked fine.

I've tried to do the same today and when I tried the light the circuit breaker went. I undid the wired and now none of the lights in the house work.

Do I need to re wire the 3 white cables together or have I completely screwed all of our lighting in the house???