Please advise on this theory........this is a radial circuit to shower room converted from garage.......wiring in pull switch from 5A fcu to pull switch: live to terminal A, earth to earth terminal in base and neutral terminated in choc block .........wiring from pullcord to light: earth to earth in terminal base, live from pull switch terminal B and neutral terminated in choc block .........wiring in light: live to live terminal, earth to earth terminal (if there is one) and neutral terminated in choc block........wiring in extractor fan live to live terminal....earth to earth terminal (if there is one) andneutral terminated in choc block.