Hi guys, first post so go easy. I have fitted an external halogen light with PIR , I have gone from the existing main wiring (not light wiring as it didn't have earth). I have used a 30A junction box and run from that (2.5mm twin core and earth) into a 3A FCU (none switched). All went well and there seemed to be no problems apart from......the light won't work. Have I made any glaring errors in what I have done? I have not checked the bulb as yet and I am hoping that is the problem but it is never that easy.