Please I need some sanity...
Today I replaced a normal switch with a dimmer switch, and at the same time replaced a normal light fitting with a new one..(dinnig room light)
When I tried it, it all seemed to be working normal until I turned on the next light in the loop, (under stairs light). When I turned this on both lights went to half brightness. When I turned the dimmer up the dinning room lights up bright and the stairs go dark, and vice versa??
Has anyone got any ideas please.......
Thanks
Mark