Dave, the loom will include presently redundant blue/yellow wires wiring under each wing probably terminating in female bullet connectors and cable tied out of the way. These are usually fed at the dash end by a fog light control unit sometimes incorporated into PCB or BCU that ensures fogs are only allowed on with headlights and will include it's own relay. The optional switch wiring should be in place as well.
Excellent Richard, thanks
This is exactly as I'd hoped, I'll investigate tonight and check the wiring with my multimeter to confirm I've found the correct fog light circuit, I assume the wiring for adding driving lights is hidden in there too so I need to make sure I've located the correct circut
Confirmation the fogs are on the bue/yellow wires helps though, I really appreciate your help
