Cheer's Martin,

The red green wire (Terminal 1 on the switch) that goes to the multifunction unit from the fog lamp switch is at battery voltage and pressing the fog lamp switch ground this wire, no feed is present on the warning lamp feed at any time, the black ground wire is grounded Ok, and by suppling a feed to the warning lamp circuit the fog lamps come on so proving that circuit, all fuses are OK. Autodata doesn't have a wiring diagram for this vehicle so I'm, not sure if I'm missing something.

Mark.