Audi A-6 (99-05 w/TOW) Hazzard Switch w/ Blinker Lamp Relay FEBI Hazard Switch with Relay NOTE: (10 pin connection) for cars w/ Trailer Towing Option. The relay is contained in the switch and not available separately. Audi part# 4B0 941 509 K B98, check fit below. Recently made FEBI BILSTEIN, not been lying around. Please see Fitment Chart below, under PRODUCT DESCRIPTION.