Thanks Breezer
Perhaps it can't support another lamp. Certainly it would not be easy to connect to the red from the PIR.
Perhaps I need to buy another. :?:
I've got into bother replacing a broken lamp with PIR.
I have 1 cable with 4 wires (red, blue, yellow and earth) feeding the primary lamp with PIR. Within the lamp there is a 3 place terminal block to connect these wires to. From the terminal block there is a brown and blue to the PIR...