One of the brown wires will bring power to this point, another will go to the switch, and the final brown wire continues on to the next light. The markered blue wire brings power back from the switch, when the switch is in the ON position.
You need to connect the brown that has constant power, to the brown that goes to the switch. Next connect the markered blue to the light, and to the brown wire that leads to the other lights on the circuit.
The green/yellow, and blue wires in your image are connected properly.
As you currently have it wired, you have the wire that feeds the other lights connected to constant power. So they will always be on.
Locating the hot
WARNING:
This procedure should only be carried out by persons with the proper tools and knowledge. And should be carried out with extreme caution.
- Turn off the power to the circuit at the breaker/fuse box.
- Disconnect all brown wires, and position them so that they are not, and will not come into contact with any other wire or metal object.
- Turn the power back on at the breaker.
- Using a multi-/voltage meter, touch one probe to the "neutral" wire block (where the blue neutral wires are connected).
- Touch the other probe to each brown wire in turn.
- If you get a voltage reading, mark that wire in some way.
- Turn the power back off at the breaker/fuse box.
You should have gotten a voltage reading on only one of the brown wires.
WARNING:
If you got a voltage reading on more than one wire, STOP, do not follow the rest of these instructions. contact a local Electrician.
Now that you know which wire is the power wire, it's time to locate the switch wire.
Locating the switch wire
- Find the blue wire that is marked as a switched hot wire.
- Follow the wire back to where it exits the cable sheath.
- Mark the brown wire that comes from the same cable sheath.
The brown wire that is part of the same cable as the marked wire is the switch wire.
Making the connections
- Connect the brown hot wire to the brown switch wire.
- Connect the blue markered wire to the remaining brown wire, and to the light.
Best Answer
Cheap and simple doesn't work with what you're asking. The most you could probably do is keep the "master" switch for each section and wire another switch on each light which, at most, would only be able to toggle select lights individually if the "master" switch is in the on position.
The only other way to obtain what you're looking for is with electronically controlled switches and relays which, exactly how it sounds, is not simple nor cheap.