Thanks PK,
I can see that someone has done some 'extra' wiring into the existing loom once I have determined what wire as 12+ etc I'll need to plug them into the existing pins at the rear of the fog light. If anyone knows what the typical layout of the wires going into the switch I'll be able to start wiring it up as at the moment I've got a great number of wires just hanging out of the plug orrifice at the moment.