I TRIED TO WIRE UP A CEILING FAN BUT AM HAVING MAJOR HEAD ACHE I HAVE 2 GREY WIRES WITH A RED AND A BLACK IN EACH . BOTH BLACKS ARE LIVE AND SO IS ONE OF THE REDS. WHICH DO I WIRE TO THE FANS LIVE / NEUTRAL / EARTH. HOPE SOMEONE CAN HELP . ALSO NO MATTER WHICH WAY I WIRE IT THE LIGHT SWITCH IS CONST...