Replacing 2 x double light switches (giving 4 separate switches controlling 4 wall lights) in the lounge with 2 x dimmer switches, so each dimmer is trying to control one side of the room each. Simple enough, you might think, but not for DIY Muppet Man!!
DIYMM forgot to take any kind of note of which of the tangled spaghetti of wires went where in the original switches or what any of them did and just shoved the wires into the switches in a "what looks right" kind of way.
When DIYMM switched the lighting circuit back on at the fuse box (safety first!) it was found that the light in the hall was permanently on and could not be switched off, other than at the fuse box. Only half the lights in the lounge worked at all.
DIYMM then spent the next four hours (as it got darker and darker) trying many different combinations of wiring which resulted in such inspiring lighting patterns as:
- All working normally, except for one fitting in the lounge which would dim but would not switch off.
- Light switches in the lounge controlling lights in the dining room.
- Dimmer switch in the lounge dimming the lights in the kitchen, but only if the switch in the dining room was off.
I got it right in the end. And I didn't even need to SOS my uncle (an electrician) ..