Sorry if I wasn't clear enough. There are the expected yellow/green and black wires, but instead of 2 red wires, there are three wires, all three of which are red and white.
About to attempt to replace a dimmer switch for the first time I looked behind the old one to see the size of the box behind it. Having looked on line to see what wiring to expect I was surprised to see 3 red and white wires instead of the 2 red ones I was expecting. Will this affect the type of...