I am trying to change the light switches on my stairs. I tried to follow how the old switches were wired, but it did not work. I have white, red, blue, and black cables. The old switches were eired so that red was the "common", after that I am at a loss...

joni, April 2008

Attempting repairs can be dangerous.
In many instances work should only be undertaken by a qualified professional.

I am a qualified electrician and can be contacted on 07747 571292 Warwickshire.

paul, June 2008