Stock fog lamp / aux lamp circuit?

On my K100RT there is a BMW factory fog lamp switch (along with three dummy switches) near the ignition key. When I flip the switch, I hear a click like a relay, but I can't seem to find what relay is clicking?

Does anyone know where the wiring is for this circuit? I'd like to hook up some aux lamps and I'd like to use the stock circuit.

Scottie
San Jose CA

Two ways to tell which relay is operating use a screwdriver as a stethoscope and operate the switch whilst listening to each relay in turn or you may just find the relay is loose in the box with wires attached I have seen similar bodgy work done by previous owners. Last method just pull the relays out to see which click when pulled that don't when the switch is not operated.
Regards,
K-BIKE