i only have the part number for the entire kit (63 17 1 469 706). try looking it up on
www.realoem.com, or ask wherever you're ordering from.
if you have the switch and lights, all you really need is a relay, the wiring and appropriate connectors.
edit: HOLY MONKEY. i just checked your webpage and saw the plethora of parts (and cars) you have. check your PM.