hi i am installing a halogen light in my bathroom.i have to grey wires hanging from my ceiling both with one red and one black wire .one wire runs to my light switch with the black(live)in com port and red neutural in l1.the other wire is the light circuit (red live Black neutural)no matter which way i connect the light stays on can you help
The reds should be connected together at the light fitting, The Neutral(blacks) from Switch connect to Brown side (live) of lamp (bulb) and tag/sleeved with Brown PVC insulating sleeve. The Neutral(black) in-coming, should be connected to Blue(neutral) side of lamp. This should now work!
Question have you no earth conductors?
Regards and be safe, isolate before doing any work