Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm looking for a some assistance in fitting a new electric dimmer light switch. I'm in the UK if that makes a difference.

I am trying to replace my existing two-gang light switch with a LightWaveRF two gang dimmer but am not sure where to start as the instructions are telling me to look out for colored cables that aren't present in the existing switch.

Here's my original light switch setup:

The back of the switch

Here's the new LightWaveRF switch:

The back of the dimmer

What steps to I need to follow to install this switch?

Here's what's in the wall (just in case we need to use these!)

The rest of the wiring

share|improve this question
up vote 7 down vote accepted

I have included two images. The first identifies the wires in your current switch and the second image identifies where to put said wires.

In case your wondering the "S" terminals are for slave units

Annotated switch image

Annotated dimmer image

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.