COULD SOMEONE PLEASE HELP ME IDENTIFY A PART FOR MY 1993 600SL. I FOUND THE PART ON THE FLOOR, DRIVER'S SIDE. APPEARS TO BE A PLUNGER TYPE SWITCH, 2"+ LONG X 1" X 3/4". TWO SILVER PINS AND TWO SMALLER GOLD PINS. PART NUMBER 000 545 99 09. THANKS. BARNEY