Hello. Please excuse this simple question, but I would like to replace an old external floodlight that is controlled with its own integral PIR/ daylight sensor, and is switched inside the house. The casing and PIR are damaged and it is a very old unit that needs to be updated. My issue is that the existing floodlight is supplied by a three core and earth cable and I am not sure how I would connect this cable to a twin core and earth light. The unit that I would like to use as a replacement is supplied with its own twin core and earth cable, daylight sensor and integral PIR. Is it possible to connect the new light with the supplied twin and earth cable and still retain the ability to switch the new floodlight internally or would I have to find a floodlight that is switchable, has a twin core and earth terminal, rather than one that is permanently powered?