- Reaction score
- 5,848
The blue wire to the right of your pic (which should have a brown sleeve on it!) is part of the cable which should be the other end of the one in the switch.
Replace this with 3&E, using the grey (with short blue sleeves at each end) for the neutral, the brown replacing the existing brown, and the black (with a short brown sleeve at each end) to replace the existing blue.
Replace this with 3&E, using the grey (with short blue sleeves at each end) for the neutral, the brown replacing the existing brown, and the black (with a short brown sleeve at each end) to replace the existing blue.