Wiring A Dimmer Light Switch Uk. More advanced dimmer switches like varilight eclique and lightwave rf have an s terminal instead. If you buy a new dimmer it can have only two black wires and one green for grounding.
Make sure the switch is turned the proper way so on is up. Remove the screws from the switch panel. Use the connectors wire nuts supplied with the fixture to attach theblack wires coming out of the dimmer switch to the colored wires that were attached to the terminals on the old switch.
Use a common screwdriver.
Finish the job by installing the cover plate and turning on the power to test the new dimmer. This circuit is wired with a 2 wire cable running from the light to the switch location. If there are wires leading from the back of the dimmer switch you will want to connect them to the wires by twisting the wires together and securing with a wire nut. The s terminal can only be linked up to a corresponding slave and won t work with an ordinary two way switch.