I am replacing a twin fluorescent light fitting which has twin light switches, with a Profil 4 track light. The cable protruding through the ceiling (circa 1976) consists of two 3 core cables, two single core cables (red) and a single green earth cable. The terminal block in the Profil fitting has 4 terminals; live, earth, neutral and a vacant terminal for "loop in" wiring. How do I connect the wires to the terminal block?

Desperate Terry, April 2009