Had same problem last year. Fog light swith uses two tiny wires that come from end of stalk and are soldered to the main light unit, when you use your indicators the wires are pulled and can break. Remove top and bottom steering wheel shroud, looking from underneath you will see the two wires, if any are broken, they can be soldered back on. **make sure you disconect battery first as it is a tight squeeze with soldering iron and you don't want to short out any other wires**
spot on information mate thanks sorted in ten minutes!!
thats me I owe you a beer!