OK had a bit of a mission today.
While removing the heater controls, I found some wires looked burnt on the Fog light control… Traced it all the way though the loom and back down to the connector! About half way though the back of the dash the wires where melted together and stripped of the plastic. So with my bro in laws help I have removed the dash and the offending loom and ordered another one from Keron.
Keron told me he has seen this before when the fog light wires are put in the wrong way round. From the look of it its a very old injury probably pre my ownership. But just goes to show you dont know what lerks behind stuff.