The dimmer switch doesnt work, but the lights still come on, i had 3 wires coming from the old light, 3 blue , 3 brown, 3 earths, The dimmer its self doesnt switch it off or on, 250W dimmer switch, and a 20W x4 spotlights, ive done some trial and error and figured some of the wires control the other few 1st floor lights, any help at all is appreciated.